An online PCBA plug-in optical detection device

Abstract

The application discloses an online PCBA plug-in optical detection equipment, and optical detection equipment is assisted to complete quality detection of PCBA plug-in through a control cabinet; four groups of detection lamps are fixedly installed on the inner side wall and the top surface of the detection cabinet, a loading platform is installed on the upper surface of a driving column; a fixed camera and a movable camera are correspondingly arranged above the loading platform; a transverse driving mechanism is arranged outside the fixed camera, and a circumferential driving mechanism is arranged below the movable camera; according to the size of the PCBA plug-in on the loading platform and the change of the welding point position, the shooting positions of the fixed camera and the movable camera are adjusted, and optical detection is carried out in cooperation with the detection light of the detection lamp; a servo motor is embeddedly installed in the driving column. In the online PCBA plug-in optical detection equipment, two detection cameras are arranged, the positions of the two groups of cameras are very flexible, and the accuracy of optical detection of the PCBA plug-in is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical detection of PCBA plug-ins, and in particular to an online optical detection device for PCBA plug-ins. Background Art

[0002] After the soldering process, the PCBA plug-in is placed in an optical inspection instrument. The intensity and color of the inspection light are adjusted. The accuracy of the solder joints on the PCBA plug-in surface is quickly analyzed by taking pictures, thereby analyzing the qualified rate of the produced PCBA plug-in. The optical inspection instrument has a fast test speed and a wide detection range.

[0003] The optical inspection device with the publication number CN209640237U includes a carrying platform for carrying the object to be measured; a first image collector is arranged above the carrying platform to collect image data of the top surface of the object to be measured; and a second image collector is arranged on the side of the carrying platform to collect image data of the side surface of the object to be measured. When it is necessary to inspect the side and top surfaces of the object to be measured, the object to be measured can be placed on the carrying platform, and the first image collector on the top and the second image collector on the side are started respectively, so that image data of the top and side surfaces of the object to be measured can be obtained. Based on the obtained image data, the thickness of the object to be measured or the surface defects of the object to be measured can be analyzed, thereby avoiding the defect that traditional optical inspection equipment cannot detect the image data of the side surface of the object to be measured, and broadening the application range of the optical inspection equipment; however, the corresponding position adjustment range between the camera and the workpiece to be inspected in the optical inspection equipment is limited, which is not convenient for flexibly adjusting the shooting inspection position according to changes in the size of the workpiece or the light temperature, and the accuracy of the inspection is affected;

[0004] An optical inspection device with the publication number CN219348625U includes an optical inspection device body, wherein a magnet is installed inside the optical inspection device body; a workpiece adjustment component, wherein the workpiece adjustment component includes a limit groove and a workpiece tray, wherein the limit groove is provided on the top surface of the optical inspection device body, and the workpiece tray is placed in the limit groove; and a suspension component, wherein the suspension component includes a crossbeam. The utility model can adjust the position of the illumination lamp by meshing the gears at the top of the switching structure and hanging on the crossbeam. Through the design of the upper adjustment disk and the lower adjustment disk, the lower adjustment disk can be rotated to control the power input of the illumination lamp, thereby switching the illumination lamp for inspection. The utility model is easy to use, has higher inspection efficiency and stronger applicability. The bottom end of the workpiece tray can move freely on the surface of the optical inspection device body through the iron ball bearing, thereby facilitating the flexible adjustment of the orientation of the inspection workpiece. However, the optical inspection device is not convenient for correcting the position of the inspection workpiece during use, and the large offset of the inspection workpiece placement position will affect the accuracy of the equipment's inspection and analysis.

[0005] An optical inspection device with the publication number CN213840257U includes a base, a vertical plate fixed on the top surface of the base, a retaining frame that can be raised and lowered is slidably connected to the vertical plate, the retaining frame is in the shape of a U-shaped frame, a flip plate is rotatably connected to the inner side of the retaining frame, and a visual camera is rotatably connected to the flip plate. The utility model uses a clamping gear to drive a driven large gear to indirectly drive the visual camera to rotate, because the clamping gear is pulled by a tension spring and fits tightly on the driven large gear, thereby eliminating the gear backlash and preventing the visual camera from shaking; the retaining frame in the utility model can be raised and lowered along the vertical plate, and the flip plate can be rotated inside the retaining frame, further expanding the shooting angle of the visual camera, which is beneficial to optical inspection work; however, the optical inspection device uses a group of cameras for detection, and there are blind spots for shooting. As factors such as light and temperature inside the equipment change, the accuracy of shooting detection is greatly affected;

[0006] When optical inspection equipment is inspecting PCBA plug-ins, changes in temperature and light in the inspection equipment, as well as changes in the size and solder joint position of the PCBA plug-in, may cause misdetection. The inspection accuracy can be improved by adjusting the position of the inspection camera and the PCBA plug-in. However, the position adjustment range between some existing inspection cameras and PCBA plug-ins is limited, which affects the optical inspection of the product. In addition, if the PCBA plug-in is placed in a position with a large offset in the inspection equipment, it will also affect the optical inspection, which is not conducive to fast and accurate inspection.

[0007] Therefore, it is necessary to design an online PCBA plug-in optical inspection device to address the above problems. Summary of the Invention

[0008] The object of the present invention is to provide an online PCBA plug-in optical inspection device to solve the problem proposed in the above background technology that in the process of optical inspection equipment inspecting PCBA plug-ins, changes in temperature and light in the inspection device and changes in PCBA plug-in size and solder joint position may cause misdetection. The inspection accuracy can be improved by adjusting the corresponding position of the inspection camera and the PCBA plug-in. However, the corresponding position adjustment range between some existing inspection cameras and PCBA plug-ins is limited, which affects the optical inspection of the product. In addition, if the PCBA plug-in is placed in a position with a large offset in the inspection device, it will also affect the optical inspection, which is not conducive to fast and accurate inspection.

[0009] To achieve the above objectives, the present invention provides the following technical solutions: an online PCBA plug-in optical inspection device, which completes the quality inspection of the PCBA plug-in with the assistance of a control cabinet, wherein the upper surface of the control cabinet is fixedly mounted with an inspection cabinet, and the front side of the inspection cabinet is equipped with a computer, and the left side of the inspection cabinet is embedded with a transparent cover plate;

[0010] An online PCBA plug-in optical inspection device, comprising:

[0011] Four sets of detection lights are fixedly installed on the inner side wall and top surface of the detection cabinet, and a driving column is fixedly installed on the inner bottom surface of the detection cabinet, and a loading platform is installed on the upper surface of the driving column;

[0012] A fixed camera and a mobile camera are correspondingly provided above the loading platform, and positioning frames are fixed on the sides of the fixed camera and the mobile camera, and the positioning frames are fixedly mounted on the side telescopic ends of the electric drive telescopic rods, the electric drive telescopic rods are fixedly mounted on the sides of the control frames, and the control frames corresponding to the outside of the fixed camera are rotatably mounted on the side of the short electric slider, and the short electric slider is sleeved and mounted on the outside of the short electric slide rail, and the control frames corresponding to the outside of the mobile camera are rotatably mounted on the side of the long electric slider, and the long electric slider is sleeved and mounted on the outside of the long electric slide rail;

[0013] A lateral drive mechanism is provided on the outside of the fixed camera, and a circumferential drive mechanism is provided below the mobile camera. The shooting positions of the fixed camera and the mobile camera are adjusted according to the changes in the size of the PCBA plug-in and the position of the solder joints on the stage, and optical detection is performed in conjunction with the detection light of the detection light;

[0014] A servo motor is embedded and installed inside the driving column.

[0015] Preferably, the transverse driving mechanism includes a guide frame fixed on the inner wall of the detection cabinet, and a screw rod is rotatably installed on the inner side of the guide frame, and a short electric slide rail is embedded in the interior of the guide frame.

[0016] Preferably, the short electric slide rail is sleeved on the outside of the lead screw to form a threaded transmission structure therewith, and the short electric slide rail is engaged with the guide frame to form a left-right sliding structure.

[0017] Preferably, the circumferential drive mechanism includes a circular track fixed to the bottom surface of the detection cabinet, and a slide groove is opened inside the circular track, and a gear ring is embedded in the inner side of the circular track, a circumferential slide is installed above the circular track, and a driver is fixedly installed on the upper surface of the circumferential slide, and the lower output end of the driver is connected to a planar gear, and the planar gear is rotatably installed on the lower surface of the circumferential slide.

[0018] Preferably, the circumferential slide is sleeved on the outside of the driving column to form a rotating structure therewith, and the upper surface of the circumferential slide is fixed to form an integrated driving structure through a driver and a long electric slide rail.

[0019] Preferably, the circumferential slide forms a sliding structure with the circular track through a flat gear and a sliding groove, and the side of the flat gear is meshed and assembled with the outer side of the gear ring.

[0020] Preferably, the loading platform is composed of an upper loading platform and a lower supporting platform, and a PCBA plug-in optical detection position centering correction mechanism is installed between the upper loading platform and the lower supporting platform;

[0021] The centering correction mechanism includes a through groove opened inside the upper supporting platform, and a slide frame is installed through the through groove, and a clamping block is fixedly installed on the upper surface of the slide frame. The upper surface of the lower supporting platform is rotatably installed with a driving frame, and the driving frame is connected to the output end position above the servo motor. The front and rear sides of the driving frame are connected to the bottom of the upper and lower slide frames by a fixed push rod, and the left and right sides of the driving frame are connected to the bottom of the left and right slide frames by a movable push rod.

[0022] Preferably, four groups of the sliding frames, clamping blocks and through-grooves are provided at equal angles on the sides of the upper supporting platform, and the four groups of clamping blocks all form a sliding structure with the upper supporting platform through the sliding frames and the through-grooves.

[0023] Preferably, the two ends of the fixed push rod respectively form a rotating structure with the driving frame and the side of the sliding frame;

[0024] The movable push rod includes a limit rod connected to the side of the sliding frame, and the side of the limit rod is fixedly connected to an embedded rod, and the embedded rod passes through and is connected to the side of the hollow rod. The hollow rod is connected to the side of the driving frame, and the upper surfaces of the hollow rod and the limit rod are connected to each other through a cylinder.

[0025] Preferably, the limiting rod forms a telescopic structure through the embedded rod and the hollow rod, and the side surface of the limiting rod and the side surface of the sliding frame form a rotating structure, and the side surface of the hollow rod and the side surface of the driving frame form a rotating structure.

[0026] Compared with the prior art, the present invention has the following beneficial effects: the online PCBA plug-in optical inspection device is equipped with dual detection cameras, and the camera position adjustment is very flexible, thereby improving the accuracy of product inspection. In addition, the inspection device is equipped with a PCBA plug-in detection position correction and centering structure, which assists in high-precision product inspection. The specific contents are as follows:

[0027] 1. A short electric slide is installed on the side of the fixed camera. The short electric slide is embedded in the guide frame. The running motor controls the rotation of the lead screw. Through the threaded transmission structure, the short electric slide can be controlled to slide left and right inside the guide frame, controlling the left and right movement of the fixed camera and adjusting the position of the fixed camera above the stage. It is also convenient to stagger the corresponding positions of the fixed camera and the mobile camera to avoid interference between the two detection cameras.

[0028] A long electric slide is installed on the side of the mobile camera. The bottom of the long electric slide is slidably connected to the circular track through a circular slide. The operating driver controls the rotation of the plane gear. Through the meshing transmission structure of the plane gear and the gear ring, the circumferential slide can be controlled to rotate to drive the mobile camera to move in a circle above the stage. The position of the mobile camera above the PCBA plug-in can be adjusted to more comprehensively adjust the camera's detection position, avoid detection blind spots, and reduce false detection.

[0029] The steering frame is rotatably mounted on the sides of the short electric slider and the long electric slider. The motor can control the corresponding rotation of the steering frame, and the electric drive telescopic rod on the side of the steering frame can push the steering frame to move telescopically, thereby further adjusting the corresponding positions of the fixed camera and the mobile camera. The adjustment positions of the fixed camera and the mobile camera are relatively flexible.

[0030] 2. There are four groups of clamps sliding on the stage. The driving frame rotates and the fixed push rod and the movable push rod drive the sliding frame and the clamps. The clamps contact the outer side of the PCBA plug-in, pushing the PCBA plug-in to the middle position above the stage, and adjusting the optical detection position of the PCBA plug-in.

[0031] According to the changes in the external dimensions of different batches of PCBA plug-ins, the corresponding positions of the clamps in the front, rear, left and right directions are adjusted. The running cylinder can adjust the length of the movable push rod, thereby adjusting the distance between the left and right clamps, making this part of the position correction structure suitable for adjusting the detection position of PCBA plug-ins of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the vertical structure of the detection cabinet of the present invention;

[0033] Figure 2 This is a schematic diagram of the lighting facade structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the elevation structure of the guide frame of the present invention;

[0035] Figure 4 This is a schematic diagram of the facade structure of the driving column of the present invention;

[0036] Figure 5 This is a schematic diagram of the vertical structure of the short electric slide rail of the present invention;

[0037] Figure 6 This is a schematic diagram of the vertical structure of the long electric slide rail of the present invention;

[0038] Figure 7 This is a schematic diagram of the vertical structure of the electric drive telescopic rod of the present invention;

[0039] Figure 8 This is a schematic diagram of the vertical structure of the gear ring of the present invention;

[0040] Figure 9 This is a schematic diagram of the elevation structure of the plane gear of the present invention;

[0041] Figure 10 Schematic diagram of the structure of the loading platform of the present invention;

[0042] Figure 11 This is a schematic diagram of the vertical structure of the clamping block of the present invention;

[0043] Figure 12 This is a schematic diagram of the vertical structure of the driving frame of the present invention;

[0044] Figure 13 It is a schematic diagram of the structure of the movable push rod of the present invention.

[0045] In the figure: 1. Control cabinet; 2. Inspection cabinet; 3. Computer; 4. Transparent cover; 5. Inspection light; 6. Drive column; 61. Servo motor; 7. Loading platform; 71. Upper loading platform; 72. Lower supporting platform; 8. Fixed camera; 9. Mobile camera; 10. Positioning frame; 11. Electric drive telescopic rod; 12. Control frame; 131. Short electric slider; 132. Long electric slider; 141. Short electric slide rail; 142. Long electric slide rail; 15. Screw; 16. Guide frame; 17. Circular track; 18. Slide groove; 19. Gear ring; 20. Circular slide; 21. Driver; 22. Plane gear; 23. Through groove; 24. Slide frame; 25. Clamp; 26. Drive frame; 27. Fixed push rod; 28. Movable push rod; 281. Limit rod; 282. Embedded rod; 283. Hollow rod; 284. Cylinder. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] Example 1

[0048] like Figure 1-Figure 3 As shown, the optical inspection equipment is equipped with dual inspection cameras, which can comprehensively detect the qualified rate of PCBA plug-ins. The specific structure is as follows:

[0049] The optical inspection equipment completes the quality inspection of the PCBA plug-in with the assistance of the control cabinet 1. The upper surface of the control cabinet 1 is fixedly installed with an inspection cabinet 2, and the front side of the inspection cabinet 2 is equipped with a computer 3, and the left side of the inspection cabinet 2 is embedded with a transparent cover plate 4; four groups of inspection lights 5 are fixedly installed on the inner wall and top surface of the inspection cabinet 2, and a driving column 6 is fixedly installed on the inner bottom surface of the inspection cabinet 2, and a loading platform 7 is installed on the upper surface of the driving column 6; a fixed camera 8 and a mobile camera 9 are correspondingly arranged above the loading platform 7, and a positioning frame 10 is fixed on the side of the fixed camera 8 and the mobile camera 9, and the positioning frame 10 is fixedly installed on the side telescopic end of the electric drive telescopic rod 11, and the electric drive telescopic rod 11 is fixedly installed on the side of the control frame 12 , and the control frame 12 corresponding to the outer side of the fixed camera 8 is rotatably mounted on the side of the short electric slider 131, and the short electric slider 131 is sleeved and mounted on the outside of the short electric slide rail 141, and the control frame 12 corresponding to the outer side of the mobile camera 9 is rotatably mounted on the side of the long electric slider 132, and the long electric slider 132 is sleeved and mounted on the outside of the long electric slide rail 142; a lateral drive mechanism is provided on the outside of the fixed camera 8, and a circumferential drive mechanism is provided under the mobile camera 9. According to the changes in the size of the PCBA plug-in and the position of the solder joint on the stage 7, the shooting positions of the fixed camera 8 and the mobile camera 9 are adjusted, and optical detection is performed in conjunction with the detection light of the detection light 5; a servo motor 61 is embedded and installed inside the drive column 6;

[0050] The PCBA plug-in is placed on the stage 7, and the light and color of the inspection light 5 are adjusted. The fixed camera 8 is used to quickly identify and inspect the solder joints of the PCBA plug-in, thereby analyzing whether the PCBA plug-in is qualified. The inspection image is fed back to the external computer 3 so that the staff can zoom in and observe the solder joints of the PCBA plug-in. For PCBA plug-ins with more complex solder joint distribution, it is difficult to fully detect the qualified status of all solder joints using the fixed camera 8 (for ordinary PCBA plug-ins, the fixed camera 8 can be used for rapid inspection directly, and for more complex PCBA plug-ins, the fixed camera 8 and the mobile camera 9 can be used to complete the inspection). With the assistance of the mobile camera 9, local positions of the PCBA plug-in are separately photographed and inspected, thereby reducing the equipment's false detection rate and improving the accuracy of the equipment's optical inspection of the PCBA plug-in;

[0051] Example 2

[0052] like Figure 4-Figure 9 As shown in the figure, according to the changes in the distribution position of the PCBA plug-in solder points and the changes in factors such as the temperature and light inside the equipment, the corresponding positions of the two sets of detection cameras are flexibly adjusted to assist the equipment in accurate detection. The specific structure is as follows:

[0053] The transverse drive mechanism includes a guide frame 16 fixed to the inner wall of the detection cabinet 2, and a screw rod 15 is rotatably mounted on the inner side of the guide frame 16, and a short electric slide rail 141 is embedded in the interior of the guide frame 16; the short electric slide rail 141 is sleeved on the outside of the screw rod 15 to form a threaded transmission structure with it, and the short electric slide rail 141 engages with the guide frame 16 to form a left and right sliding structure;

[0054] The circumferential drive mechanism includes a circular track 17 fixed to the inner bottom surface of the detection cabinet 2, and a slide groove 18 is opened inside the circular track 17, and a gear ring 19 is embedded on the inner side of the circular track 17, and a circumferential slide 20 is installed above the circular track 17, and a driver 21 is fixedly installed on the upper surface of the circumferential slide 20, and the lower output end of the driver 21 is connected to a flat gear 22, and the flat gear 22 is rotatably mounted on the lower surface of the circumferential slide 20; the circumferential slide 20 is sleeved on the outside of the drive column 6 to form a rotating structure therewith, and the upper surface of the circumferential slide 20 is fixed to an integrated drive structure through the driver 21 and the long electric slide 142; the lower side of the circumferential slide 20 forms a sliding structure with the circular track 17 through the flat gear 22 and the slide groove 18, and the side of the flat gear 22 is meshed with the outer side of the gear ring 19;

[0055] Place the PCBA plug-in on the stage 7, and adjust the corresponding positions of the fixed camera 8 and the mobile camera 9 according to the changes in temperature and light inside the inspection cabinet 2, as well as the changes in the size and solder joint distribution of different batches of PCBA plug-ins;

[0056] The running motor can control the rotation of the control frame 12 to adjust the angles of the fixed camera 8 and the mobile camera 9 corresponding to the side of the electric slider, and the circular electric drive telescopic rod 11 pushes the positioning frame 10 to move horizontally, adjusting the distance between the fixed camera 8 and the mobile camera 9 corresponding to the side of the electric slider, and through the sliding structure between the short electric slider 131, the short electric slide rail 141 and the long electric slider 132, the long electric slide rail 142, the corresponding heights of the fixed camera 8 and the mobile camera 9 can be adjusted. Through this part of the structure, the positions of the fixed camera 8 and the mobile camera 9 on the loading platform 7 can be simply adjusted;

[0057] The operating driver 21 controls the rotation of the flat gear 22 below. The side of the flat gear 22 is meshed with the side of the gear ring 19. Under the action of the meshing transmission structure, the circumferential slide 20 sleeved on the outside of the driving column 6 can be controlled to rotate. The circumferential slide 20 controls the mobile camera 9 to rotate in a circle above the circular track 17, adjusts the position of the mobile camera 9 above the stage 7, and moves the mobile camera 9 to take a more comprehensive photo to detect whether the solder joints on the surface of the PCBA plug-in are qualified.

[0058] The running motor controls the screw rod 15 to rotate, and under the action of the threaded transmission structure, controls the short electric slide rail 141 to slide laterally inside the guide frame 16, thereby controlling the corresponding lateral movement of the fixed camera 8 inside the detection cabinet 2. When controlling the circular rotation of the mobile camera 9, the corresponding position of the fixed camera 8 can be adjusted laterally to avoid mutual interference between the two groups of detection cameras, thereby ensuring normal equipment detection.

[0059] Example 3

[0060] like Figure 10-13 As shown, the detection equipment is provided with a PCBA plug-in detection position adjustment structure to prevent the PCBA plug-in detection position from being excessively offset and affecting the detection accuracy. The specific structure is as follows:

[0061] The loading platform 7 is composed of an upper loading platform 71 and a lower support platform 72, and a centering correction mechanism for the optical detection position of the PCBA plug-in is installed between the upper loading platform 71 and the lower support platform 72; the centering correction mechanism includes a through slot 23 provided inside the upper loading platform 71, and a slide frame 24 is installed through the through slot 23, and a clamping block 25 is fixedly installed on the upper surface of the slide frame 24, and a driving frame 26 is rotatably installed on the upper surface of the lower support platform 72, and the driving frame 26 is connected to the output end position above the servo motor 61, and the front and rear sides of the driving frame 26 are connected to the lower part of the upper and lower slide frames 24 by fixed push rods 27, and the left and right sides of the driving frame 26 are connected to the lower part of the left and right slide frames 24 by movable push rods 28; four groups of slide frames 24, clamping blocks 25 and through slots 23 are arranged at equal angles on the side of the upper loading platform 71, and the four groups of clamping blocks 25 all form a sliding structure with the upper loading platform 71 through the slide frames 24 and the through slots 23;

[0062] The two ends of the fixed push rod 27 respectively form a rotating structure with the side of the driving frame 26 and the sliding frame 24; the movable push rod 28 includes a limiting rod 281 connected to the side of the sliding frame 24, and the side of the limiting rod 281 is fixedly connected to the embedded rod 282, and the embedded rod 282 passes through and is connected to the side of the hollow rod 283, the hollow rod 283 is connected to the side of the driving frame 26, and the upper surface of the hollow rod 283 and the limiting rod 281 are connected to each other through the cylinder 284; the limiting rod 281 forms a telescopic structure with the hollow rod 283 through the embedded rod 282, and the side of the limiting rod 281 and the side of the sliding frame 24 form a rotating structure, and the side of the hollow rod 283 and the side of the driving frame 26 form a rotating structure;

[0063] The PCBA plug-in is placed on the upper loading platform 71, and the servo motor 61 is operated to control the rotation of the driving frame 26. When the driving frame 26 rotates, the fixed push rod 27 and the movable push rod 28 connected to its side rotate accordingly. The fixed push rod 27 and the movable push rod 28 push the sliding frame 24 to slide through the inside of the through slot 23. The sliding frame 24 drives the upper clamping block 25 to move synchronously. The four groups of clamping blocks 25 move inward. The clamping blocks 25 contact the outside of the PCBA plug-in, pushing the PCBA plug-in to move and adjust to the middle position of the upper surface of the upper loading platform 71. This makes the detection position of the PCBA plug-in more accurate, helping to improve the accuracy of the optical detection of the detection equipment;

[0064] According to the changes in the external dimensions of the PCBA plug-in, the length of the movable push rod 28 can be adjusted (when the PCBA plug-in is a square structure, the length of the fixed push rod 27 and the movable push rod 28 is kept the same; when the PCBA plug-in is a rectangular structure, the length of the movable push rod 28 is adjusted). The operating cylinder 284 pushes the limit rod 281 to move, and the embedded rod 282 slides through the side of the hollow rod 283 to adjust the distance between the limit rod 281 and the hollow rod 283, thereby adjusting the length of the movable push rod 28, so that the position correction structure can be suitable for PCBA plug-ins of different sizes.

[0065] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An online PCBA plug-in optical inspection device, the optical inspection device assists in completing the quality inspection of the PCBA plug-in through a control cabinet (1), the upper surface of the control cabinet (1) is fixedly mounted with an inspection cabinet (2), the front side of the inspection cabinet (2) is equipped with a computer (3), and the left side of the inspection cabinet (2) is embedded with a transparent sealing plate (4); It is characterized by: include: Four sets of detection lights (5) are fixedly installed on the inner side wall and the top surface of the detection cabinet (2), and a driving column (6) is fixedly installed on the inner bottom surface of the detection cabinet (2), and a loading platform (7) is installed on the upper surface of the driving column (6); A fixed camera (8) and a movable camera (9) are correspondingly provided above the loading platform (7), and a positioning frame (10) is fixed to the side of the fixed camera (8) and the movable camera (9), and the positioning frame (10) is fixedly mounted on the side telescopic end of the electric drive telescopic rod (11), the electric drive telescopic rod (11) is fixedly mounted on the side of the control frame (12), and the control frame (12) corresponding to the outer side of the fixed camera (8) is rotatably mounted on the side of the short electric slider (131), and the short electric slider (131) is sleeved and mounted on the outside of the short electric slide rail (141), and the control frame (12) corresponding to the outer side of the movable camera (9) is rotatably mounted on the side of the long electric slider (132), and the long electric slider (132) is sleeved and mounted on the outside of the long electric slide rail (142); The fixed camera (8) is provided with a transverse driving mechanism on the outside, and the movable camera (9) is provided with a circumferential driving mechanism on the bottom. According to the changes in the size of the PCBA plug-in and the position of the solder joints on the stage (7), the shooting positions of the fixed camera (8) and the movable camera (9) are adjusted, and optical detection is performed in conjunction with the detection light of the detection light (5); A servo motor (61) is mounted in the interior of the driving column (6); The transverse driving mechanism includes a guide frame (16) fixed on the inner wall of the detection cabinet (2), a screw rod (15) is rotatably mounted on the inner side of the guide frame (16), and a short electric slide rail (141) is embedded in the interior of the guide frame (16); The circumferential drive mechanism includes a circular track (17) fixed to the inner bottom surface of the detection cabinet (2), and a slide groove (18) is opened inside the circular track (17), and a gear ring (19) is embedded and installed on the inner side of the circular track (17), a circumferential slide (20) is installed above the circular track (17), and a driver (21) is fixedly installed on the upper surface of the circumferential slide (20), and the lower output end of the driver (21) is connected to a flat gear (22), and the flat gear (22) is rotatably installed on the lower surface of the circumferential slide (20); The loading platform (7) is composed of an upper loading platform (71) and a lower supporting platform (72), and a PCBA plug-in optical detection position centering correction mechanism is installed between the upper loading platform (71) and the lower supporting platform (72); The centering correction mechanism includes a through slot (23) provided inside the upper supporting platform (71), and a slide frame (24) is installed through the through slot (23), and a clamping block (25) is fixedly installed on the upper surface of the slide frame (24), and a driving frame (26) is rotatably installed on the upper surface of the lower supporting platform (72), and the driving frame (26) is connected to the output end position above the servo motor (61), and the front and rear sides of the driving frame (26) are connected to the lower part of the upper and lower slide frames (24) through a fixed push rod (27), and the left and right sides of the driving frame (26) are connected to the lower part of the left and right slide frames (24) through a movable push rod (28); Four groups of sliding frames (24), clamping blocks (25) and through-grooves (23) are arranged at equal angles on the side of the upper bearing platform (71), and the four groups of clamping blocks (25) all form a sliding structure with the upper bearing platform (71) through the sliding frames (24) and the through-grooves (23).

2. The online PCBA plug-in optical inspection device according to claim 1, characterized in that: The short electric slide rail (141) is sleeved on the outside of the screw rod (15) to form a threaded transmission structure therewith, and the short electric slide rail (141) is engaged with the guide frame (16) to form a left-right sliding structure.

3. The online PCBA plug-in optical inspection device according to claim 1, characterized in that: The circumferential slide (20) is sleeved on the outside of the driving column (6) to form a rotating structure therewith, and the upper surface of the circumferential slide (20) is fixed to form an integrated driving structure through a driver (21) and a long electric slide rail (142).

4. The online PCBA plug-in optical inspection device according to claim 3, characterized in that: The circumferential slide plate (20) forms a sliding structure with the circular track (17) through the flat gear (22) and the slide groove (18), and the side of the flat gear (22) is meshed and assembled with the outer side of the gear ring (19).

5. The online PCBA plug-in optical inspection device according to claim 1, characterized in that: The two ends of the fixed push rod (27) respectively form a rotating structure with the sides of the driving frame (26) and the sliding frame (24); The movable push rod (28) includes a limiting rod (281) connected to the side of the sliding frame (24), and the side of the limiting rod (281) is fixedly connected to an embedded rod (282), and the embedded rod (282) passes through and is connected to the side of a hollow rod (283), and the hollow rod (283) is connected to the side of the driving frame (26), and the upper surfaces of the hollow rod (283) and the limiting rod (281) are connected to each other through a cylinder (284).

6. The online PCBA plug-in optical inspection device according to claim 5, characterized in that: The limiting rod (281) forms a telescopic structure through the embedded rod (282) and the hollow rod (283), and the side of the limiting rod (281) and the side of the sliding frame (24) form a rotating structure, and the side of the hollow rod (283) and the side of the driving frame (26) form a rotating structure.

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