An online visual inspection system for flat tubes

Abstract

The present invention discloses an online visual inspection system for flat tubes, comprising an imaging system, a computer system, mechanical equipment and auxiliary equipment. The imaging system comprises a high-speed industrial camera, a high-performance adaptive light source, an infrared filter and an industrial lens. Meanwhile, the high-performance adaptive light source comprises an annular LED light source and a coaxial light source. The high-speed industrial camera is provided with an infrared filter and an industrial lens, and the high-speed industrial camera is installed above each surface of the flat tube. Meanwhile, a coaxial light source is installed between the high-speed industrial camera and the flat tube to be inspected, and the high-speed industrial camera is equipped with an annular LED light source. The structure of the annular LED light source is a hollow ring with a notch on its edge for assembling the flat tube to be inspected. The high-speed industrial camera is fixedly connected to the mechanical equipment. The invention has the advantages of simple and reliable structure, clear imaging, fast solution speed and high defect recognition rate, thereby improving the defect recognition detection rate.

Description

Technical Field

[0001] The present invention relates to the technical field of visual inspection, and in particular to an online visual inspection system for flat tubes. Background Art

[0002] As a primary material in thermal management systems, flat tubes feature complex cross-sections and precise dimensions. Due to the high-temperature brazing required during processing, defects such as scratches, pits, and holes can create risks of corrosion, leakage, and other accidents. Therefore, flat tubes have stringent surface quality requirements.

[0003] Porosity, zinc slag, scratches, and pits are common defects in flat tube production. These defects can severely impact the service life of related products in thermal management equipment and, in severe cases, pose a serious threat to the equipment and personnel. Flat tube surfaces are typically available in either zinc-sprayed or non-zinc-sprayed versions. During production, these surfaces exhibit varying geometric specifications, high strip speeds, severe vibration, small defects (commonly less than 1mm in diameter), and significant surface reflectivity. Currently, the flat tube production process generally relies on manual full inspection to control surface quality, supplemented by eddy current testing to control pore flow. Manual full inspection surface quality control is significantly affected by operator skill, making it prone to missed and misjudgment detection, ultimately leading to defective product flow. Even for the same skilled worker, consistent inspection performance can be difficult to achieve under varying moods and fatigue levels. Furthermore, manual inspection makes it difficult to categorize and count the types and quantities of defects, hindering targeted quality improvement efforts. On the other hand, eddy current testing places high demands on the production conditions of flat tubes. Changes in tube speed and slight vibrations can significantly affect the test results, making missed and misjudgment more likely. Therefore, new testing methods are needed to further improve product quality. Summary of the Invention

[0004] The object of the present invention is to provide an online visual inspection system for flat tubes to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an online visual inspection system for flat tubes, comprising an imaging system, a computer system, mechanical equipment and auxiliary equipment, wherein the imaging system comprises a high-speed industrial camera, a high-performance adaptive light source, an infrared filter and an industrial lens, and the high-performance adaptive light source comprises an annular LED light source and a coaxial light source, the high-speed industrial camera is provided with an infrared filter and an industrial lens, and the high-speed industrial camera is installed above each surface of the flat tube, and a coaxial light source is installed between the high-speed industrial camera and the flat tube to be inspected, and the high-speed industrial camera is equipped with an annular LED light source, the structure of the annular LED light source is a hollow ring in the middle, and a notch is opened on its edge for assembling the flat tube to be inspected, the high-speed industrial camera is fixedly connected to the mechanical equipment, and the machine The mechanical equipment includes a height adjustment device, a camera focusing device, a side camera height adjustment device, a flat tube limit device and a cabinet assembly. At the same time, the camera focusing device includes a servo motor, a pulley mechanism, a connecting and mounting screw, a slide rail, a slide seat, a fixed profile, a camera fixed base, a camera focusing device mounting column and a camera focusing device mounting seat. The high-speed industrial camera is fixedly connected to one side of the camera fixed base, and the other side of the camera fixed base is fixedly connected to the slide seat, and the slide seat is connected to the connecting and mounting screw, and the connecting and mounting screw is rotatably connected to the fixed profile. At the same time, the fixed profile is fixedly connected with a slide rail, and the slide seat slides on the slide rail. One end of the connecting and mounting screw is connected to the output end of the servo motor through a pulley mechanism. At the same time, the servo motor is provided with a servo motor power line and a servo motor data line.

[0006] Preferably, the servo motor and coaxial light source are arranged in the side camera height adjustment device, the side camera height adjustment device includes a side guide cylinder, a side guide cylinder mounting column and a side guide cylinder mounting seat, the servo motor and coaxial light source are arranged on the side guide cylinder mounting seat, and the side guide cylinder mounting seat is fixedly connected to the side guide cylinder, the side guide cylinder is fixedly connected to the side guide cylinder mounting column, and the side guide cylinder mounting column is fixedly connected to the cabinet assembly.

[0007] Preferably, the cabinet assembly includes a cabinet lower shell, a cabinet upper shell, a cabinet door and a cabinet base, and the servo motor and the coaxial light source are fixedly connected to the bracket, and the bracket is fixedly connected to the cabinet upper shell. At the same time, a cabinet door is provided on one side of the cabinet upper shell, and the cabinet upper shell is fixedly connected to the top side of the cabinet base.

[0008] Preferably, the other side of the top of the cabinet base is fixedly connected to the lower shell of the cabinet, and mechanical equipment is provided on both sides of the cabinet base, and height adjustment devices in the mechanical equipment are provided on both sides of the cabinet base, and the height adjustment device includes a connecting base and a lifting platform.

[0009] Preferably, the connecting base is fixedly connected to the ground by bolts, and the connecting base is connected to the lifting platform by screws. The lifting platform is equipped with a flat tube limiting device and auxiliary equipment. The flat tube limiting device includes an installed lateral limiting roller and an installed vertical limiting roller, and the installed lateral limiting roller includes a fixed lateral limiting roller, a laterally movable roller and a lateral limiting roller adjusting screw.

[0010] Preferably, the installed vertical limit roller includes a fixed vertical limit roller and a movable vertical limit roller, and a fixed transverse limit roller, a transverse limit roller adjustment screw and a fixed vertical limit roller are installed on the lifting platform. At the same time, the transverse limit roller adjustment screw is connected to the transverse movable roller through a ball nut, and at the same time, an elastic pressing machine in the auxiliary equipment is provided on the lifting platform, and the movable vertical limit roller is connected to the elastic pressing machine.

[0011] Preferably, the auxiliary equipment includes a speed measuring device and a marking device, and the speed measuring device includes an encoder, an elastic pressing machine and a pressing roller, the marking equipment includes an inkjet printer, a marking position lateral adjustment screw and a marking position vertical adjustment screw, the elastic pressing machine is cooperated with the encoder and the pressing roller, and a marking position lateral adjustment screw is provided on the lifting platform, and the marking position lateral adjustment screw is cooperated with the marking position vertical adjustment screw, and the marking position vertical adjustment screw is cooperated with the inkjet printer, and a computer system is provided on one side of the upper shell of the cabinet.

[0012] Preferably, the computer system includes a synchronizer module, a data processor module, a detection server module, a data storage module and a terminal human-machine interface, and the terminal human-machine interface is provided on one side of the upper shell of the cabinet.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the invention, through the imaging system, can obtain high-contrast defect images with optimal resolution, optical path and imaging mode, ensuring that defects are clearly visible against the background of the flat tube, and can adapt to the interference of high temperature and dust conditions on imaging; at the same time, each set of camera focusing devices adopts an independent servo control mechanism to ensure that the camera can easily adjust the spacing when the specification or position of the flat tube changes, ensuring that a clear flat tube image is captured; the flat tube limit device is used to ensure that the flat tube produces as small an up and down jump and left and right offset as possible during movement, which is convenient for the camera to focus; the speed measuring device provided at the same time is used to transmit the linear speed data of the flat tube strip to the synchronizer module in real time to adjust the shooting frequency of the high-speed industrial camera; the marking equipment is used to mark the area determined as a defect by the data processor module, which is convenient for identifying and removing the defective parts in the subsequent process; thus, the flat tube online visual inspection system has the advantages of simple and reliable structure, clear imaging, fast solution speed and high defect recognition rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the installation of a high-speed industrial camera in the present invention;

[0016] Figure 3 Schematic diagram of the installation of the pulley mechanism of the present invention;

[0017] Figure 4 This is a schematic diagram of the installation of the coaxial light source in the present invention;

[0018] Figure 5 This is a schematic diagram of the installation of the cabinet base in the present invention;

[0019] Figure 6 It is the workflow diagram of the present invention;

[0020] Figure 7 Schematic diagram of the installation of the pressing roller in the present invention;

[0021] Figure 8 Schematic diagram of the installation of the lateral limit roller adjusting screw in the present invention;

[0022] Figure 9 This is a schematic diagram of the installation of the elastic pressing machine in the present invention;

[0023] Figure 10 This is a schematic diagram of the installation of the vertical adjustment screw for the marking position in the present invention;

[0024] Figure 11 This is a schematic diagram of the installation of the lifting platform in the present invention;

[0025] In the figure: 1. Imaging system; 11. High-speed industrial camera; 12. High-performance adaptive light source; 13. Infrared filter; 14. Industrial lens; 121. Ring LED light source; 122. Coaxial light source; 2. Computer system; 21. Synchronizer module; 22. Data processor module; 23. Detection server module; 24. Data storage module; 25. Terminal human-machine interface; 3. Mechanical equipment; 31. Height adjustment device; 311. Connecting base; 312. Lifting platform; 32. Camera focusing device; 321. Servo motor; 3211. Servo motor power cable; 3212. Servo motor data cable; 322. Pulley mechanism; 323. Mounting screw; 324. Slide rail; 325. Slide seat; 326. Fixed profile; 327. Camera fixing base; 328. Camera focusing device mounting column; 329. Camera focusing device mounting base; 33 331. Side camera height adjustment device; 332. Side guide cylinder; 333. Side guide cylinder mounting column; 344. Flat tube limit device; 341. Install the lateral limit roller; 3411. Fix the lateral limit roller; 3412. Horizontally movable roller; 3413. Horizontal limit roller adjustment screw; 342. Install the vertical limit roller; 3421. Fix the vertical limit roller; 3422 , movable vertical limit roller; 35, cabinet assembly; 351, cabinet lower shell; 352, cabinet upper shell; 353, cabinet door; 354, cabinet base; 4, auxiliary equipment; 41, speed measuring device; 411, encoder; 412, elastic pressing machine; 413, pressing roller; 42, marking equipment; 421, inkjet printer; 422, marking position lateral adjustment screw; 423, marking position vertical adjustment screw. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-11The present invention provides an embodiment of an online visual inspection system for flat tubes, comprising an imaging system 1, a computer system 2, mechanical equipment 3 and auxiliary equipment 4. The imaging system 1 comprises a high-speed industrial camera 11, a high-performance adaptive light source 12, an infrared filter 13 and an industrial lens 14. The high-speed industrial camera 11 is installed above each surface of the flat tube and is used to capture images of each surface of the flat tube. At the same time, the high-performance adaptive light source 12 comprises an annular LED light source 121 and a coaxial light source 122. The annular LED light source 121 is composed of an LED array in a cone shape and illuminates the surface of the object to be inspected at an oblique angle, illuminating the area to be inspected by diffuse reflection. The light source can highlight the edges and height changes of the area to be inspected, highlighting parts that were originally difficult to see. The structure of the annular LED light source 121 is a ring with a hollow center, and a notch is opened on its edge for the assembly of the flat tube to be tested. The coaxial light source 122 can provide more uniform lighting than traditional light sources, and can reduce the interference caused by the reflection of the flat tube surface. The high-speed industrial camera 11 is equipped with an infrared filter 13 and an industrial lens 14, and the high-speed industrial camera 11 is installed above each surface of the flat tube. At the same time, a coaxial light source 122 is installed between the high-speed industrial camera 11 and the flat tube to be tested, and the high-speed industrial camera 11 is equipped with an annular LED light source 121. The structure of the annular LED light source 121 is a ring with a hollow center, and a notch is opened on its edge for the assembly of the flat tube to be tested. The high-speed industrial camera 11 is fixedly connected to the mechanical equipment 3, and the mechanical equipment 3 includes a height adjustment device 31, a camera focusing device 32, and a side camera. The machine height adjustment device 33, the flat tube limiting device 34 and the cabinet assembly 35, while the camera focusing device 32 includes a servo motor 321, a pulley mechanism 322, a connecting and mounting screw 323, a slide rail 324, a slide 325, a fixed profile 326, a camera fixing base 327, a camera focusing device mounting column 328 and a camera focusing device mounting base 329. The high-speed industrial camera 11 is fixedly connected to one side of the camera fixing base 327. The camera fixing base 327 can be used to stably install the high-speed industrial camera 11 and has the characteristic of easy disassembly; the slide 325 is connected to the connecting and mounting screw 323, and the connecting and mounting screw 323 is connected to the servo motor 321 through the pulley mechanism 322. The rotation of the servo motor 321 can quickly and accurately adjust the distance between the high-speed industrial camera 11 and the flat tube for focusing;The other side of the camera fixing base 327 is fixedly connected with a slide 325, and the slide 325 is connected to the connecting and installing screw 323, and the connecting and installing screw 323 is rotatably connected to the fixed profile 326. At the same time, the fixed profile 326 is fixedly connected with a slide rail 324, and the slide 325 slides on the slide rail 324. One end of the connecting and installing screw 323 is connected to the output end of the servo motor 321 through a pulley mechanism 322. At the same time, the servo motor 321 is provided with a servo motor power line 3211 and a servo motor data line 3212. The servo motor 321 and the coaxial light source 122 are arranged on the side camera height adjustment device 33, and the side camera height adjustment device 33 includes a side guide cylinder 331, a side guide cylinder mounting column 332 and a side guide cylinder mounting seat 333. The servo motor 321 and the coaxial light source 122 are arranged on the side guide cylinder mounting seat 333, and the side guide cylinder mounting seat 333 is fixedly connected to the side guide cylinder 331, and the side guide cylinder 331 is fixedly connected to the side guide cylinder mounting column 332, and the side guide cylinder mounting column 332 is fixedly connected to the cabinet assembly 3 5, the setting of the side camera height adjustment device 33 can lower the height of the camera focus device 32 on the side of the opening of the ring-shaped LED light source 121 to make room, thereby facilitating the assembly of the flat tube; the cabinet assembly 35 includes a cabinet lower shell 351, a cabinet upper shell 352, a cabinet door 353 and a cabinet base 354, while the servo motor 321 and the coaxial light source 122 are fixedly connected to the bracket, and the bracket is fixedly connected to the cabinet upper shell 352, and a cabinet door 353 is provided on one side of the cabinet upper shell 352, and the cabinet upper shell 352 is fixedly connected to one side of the top of the cabinet base 354, and the other side of the top of the cabinet base 354 is fixedly connected to the cabinet lower shell 351. At the same time, mechanical equipment 3 is set on both sides of the cabinet base 354, and height adjustment devices 31 of the mechanical equipment 3 are set on both sides of the cabinet base 354. The height adjustment device 31 includes a connecting base 311 and a lifting platform 312. The matching position of the connecting base 311 and the lifting platform 312 can be manually adjusted to adjust the height difference between the imaging system 1, the mechanical equipment 3 and the auxiliary equipment 4 to keep them level;The connecting base 311 is fixedly connected to the ground by bolts, and the connecting base 311 is connected to the lifting platform 312 by screws. The lifting platform 312 is equipped with a flat tube limiting device 34 and an auxiliary device 4. The flat tube limiting device 34 includes a lateral limiting roller 341 and a vertical limiting roller 342. The lateral limiting roller 341 includes a fixed lateral limiting roller 3411, a lateral movable roller 3412 and a lateral limiting roller adjusting screw 3413. The vertical limiting roller 342 includes a fixed vertical limiting roller 3421 and a movable vertical limiting roller 3422. The fixed vertical limiting roller 3421 and the movable vertical limiting roller 3422 can be adjusted by adjusting the position of the movable vertical limiting roller 3422. 2, so as to limit the vertical jump of flat tubes of different thicknesses. A fixed transverse limiting roller 3411, a transverse limiting roller adjusting screw 3413 and a fixed vertical limiting roller 3421 are installed on the lifting platform 312. At the same time, the transverse limiting roller adjusting screw 3413 is connected with a transverse movable roller 3412 through a ball nut. At the same time, an elastic pressing machine 412 in the auxiliary equipment 4 is provided on the lifting platform 312, and the elastic pressing machine 412 is connected with a movable vertical limiting roller 3422. By installing the transverse limiting roller 341, the spacing between the fixed transverse limiting roller 3411 and the transverse movable roller 3412 can be adjusted by adjusting the position of the transverse movable roller 3412. , thereby limiting the jitter of flat tubes of different widths along the lateral direction, the auxiliary equipment 4 includes a speed measuring device 41 and a marking device 42, and the speed measuring device 41 includes an encoder 411, an elastic pressing machine 412 and a pressing roller 413, the marking device 42 includes an inkjet printer 421, a marking position lateral adjustment screw 422 and a marking position vertical adjustment screw 423, the elastic pressing machine 412 is connected with the encoder 411 and the pressing roller 413, and the lifting platform 312 is provided with a marking position lateral adjustment screw 422, and the marking position lateral adjustment screw 422 is connected with the marking position vertical adjustment screw 423, and the marking position vertical adjustment screw 423 is connected with the inkjet printer 421, and the upper shell 352 of the cabinet A computer system 2 is provided on one side. The computer system 2 includes a synchronizer module 21, a data processor module 22, a detection server module 23, a data storage module 24, and a terminal human-machine interface 25. The terminal human-machine interface 25 is provided on one side of the upper housing 352 of the cabinet. During operation, the flat tube is connected to the encoder 411. The synchronizer module 21 collects signals from the encoder 411 connected to the flat tube in real time. When the moving speed of the flat tube changes, the synchronizer module 21 can always ensure that the high-speed industrial camera 11 completes the acquisition of the flat tube surface image at an appropriate shooting frequency. The data processor module 22 obtains the flat tube image from the high-speed industrial camera 11, performs defect detection, and feeds back the detection results to the detection server module 23.After verification, the inspection server module 23 deletes the flat tube image cache obtained by the data processor module 22 or saves it to the data storage module 24. The terminal human-machine interface 25 supports the display of production information and the latest defect data, and also has defect information retrieval and statistics functions. A speed meter 41 is installed to obtain the linear speed of the flat tube strip in real time and transmit this speed information to the synchronizer module 21. A marking device 42 is installed. Upon receiving a product defect signal from the data processor module 22, the marking device 42 marks the defect at the corresponding location, facilitating the identification and removal of the defective area in subsequent processes.

[0028] Working principle: A speed measuring device 41 is installed upstream of the imaging system 1 to obtain the linear speed of the flat tube strip in real time, and send the speed information to the synchronizer module 21 to adjust the shooting frequency of the high-speed industrial camera; a marking device 42 is also installed downstream of the imaging system 1. After receiving the detection results of the shooting area from the data processor module 22, the marking device 42 will mark the parts determined to be defects, thereby completing the identification work.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A flat tube online visual inspection system, comprising an imaging system (1), a computer system (2), mechanical equipment (3) and auxiliary equipment (4), characterized in that: The imaging system (1) includes a high-speed industrial camera (11), a high-performance adaptive light source (12), an infrared filter (13) and an industrial lens (14), and the high-performance adaptive light source (12) includes an annular LED light source (121) and a coaxial light source (122). The high-speed industrial camera (11) is provided with an infrared filter (13) and an industrial lens (14). The high-speed industrial camera (11) is installed above each surface of the flat tube. The coaxial light source (122) is installed between the high-speed industrial camera (11) and the flat tube to be inspected. The high-speed industrial camera (11) is also provided with an annular LED light source (121). The annular LED light source (121) is in the shape of a hollow ring with a hole at its edge. The notch is used for assembling the flat tube to be measured. The high-speed industrial camera (11) is fixedly connected to the mechanical equipment (3). The mechanical equipment (3) includes a height adjustment device (31), a camera focusing device (32), a side camera height adjustment device (33), a flat tube limiting device (34) and a cabinet component (35). The height adjustment device (31) includes a connecting base (311) and a lifting platform (312). The lifting platform (312) is equipped with a flat tube limiting device (34) and an auxiliary device (4). The flat tube limiting device (34) includes a transverse limiting roller (341) and a vertical limiting roller (342). The transverse limiting roller (341) includes a fixed transverse limiting roller (3411), a transverse movable roller (3412), and a fixed transverse limiting roller (3411). 12) and a lateral limit roller adjusting screw (3413), the vertical limit roller (342) is installed to include a fixed vertical limit roller (3421) and a movable vertical limit roller (3422), the fixed lateral limit roller (3411), the lateral limit roller adjusting screw (3413) and the fixed vertical limit roller (3421) are installed on the lifting platform (312), and the lateral limit roller adjusting screw (3413) is connected to the lateral movable roller (3412) through a ball nut, and the lifting platform (312) is provided with an elastic pressing machine (412) in the auxiliary equipment (4), and the elastic pressing machine (412) is connected to the movable vertical limit roller (3422), and the camera focus The device (32) includes a servo motor (321), a pulley mechanism (322), a connecting and mounting screw (323), a slide rail (324), a slide seat (325), a fixed profile (326), a camera fixed base (327), a camera focus device mounting column (328) and a camera focus device mounting seat (329). The high-speed industrial camera (11) is fixedly connected to one side of the camera fixed base (327), and the other side of the camera fixed base (327) is fixedly connected to the slide seat (325). The slide seat (325) is cooperatively connected to the connecting and mounting screw (323), and the connecting and mounting screw (323) is rotatably connected to the fixed profile (326). At the same time, the fixed profile (326) is fixedly connected to the slide rail (324).The slide (325) is located on the slide rail (324) and slides. One end of the screw (323) is connected to the output end of the servo motor (321) through a pulley mechanism (322). The servo motor (321) is provided with a servo motor power line (3211) and a servo motor data line (3212). The computer system (2) includes a terminal human-machine interface (25). The terminal human-machine interface (25) supports the display of production information and the latest defect data.

2. The flat tube online visual inspection system according to claim 1, characterized in that: The servo motor (321) and the coaxial light source (122) are arranged on a side camera height adjustment device (33), and the side camera height adjustment device (33) includes a side guide cylinder (331), a side guide cylinder mounting column (332), and a side guide cylinder mounting seat (333). The servo motor (321) and the coaxial light source (122) are arranged on the side guide cylinder mounting seat (333), and the side guide cylinder mounting seat (333) is fixedly connected to the side guide cylinder (331), the side guide cylinder (331) is fixedly connected to the side guide cylinder mounting column (332), and the side guide cylinder mounting column (332) is fixedly connected to the cabinet assembly (35).

3. The flat tube online visual inspection system according to claim 2, characterized in that: The cabinet assembly (35) comprises a cabinet lower section housing (351), a cabinet upper section housing (352), a cabinet door (353) and a cabinet base (354); the servo motor (321) and the coaxial light source (122) are both fixedly connected to a bracket, and the bracket is fixedly connected to the cabinet upper section housing (352) and the cabinet lower section housing (351); a cabinet door (353) is provided on one side of the cabinet upper section housing (352), and the cabinet upper section housing (352) and the cabinet lower section housing (351) are fixedly connected to one side of the top end of the cabinet base (354).

4. The flat tube online visual inspection system according to claim 3, characterized in that: The other side of the top of the cabinet base (354) is fixedly connected to the cabinet lower shell (351), and mechanical equipment (3) is provided on both sides of the cabinet base (354), and height adjustment devices (31) in the mechanical equipment (3) are provided on both sides of the cabinet base (354).

5. The flat tube online visual inspection system according to claim 4, characterized in that: The connecting base (311) is fixedly connected to the ground via bolts, and the connecting base (311) is connected to the lifting platform (312) via screws.

6. The flat tube online visual inspection system according to claim 1, characterized in that: The auxiliary equipment (4) includes a speed meter (41) and a marking device (42), and the speed meter (41) includes an encoder (411), an elastic pressing machine (412) and a pressing roller (413), and the marking device (42) includes an inkjet printer (421), a marking position transverse adjustment screw (422) and a marking position vertical adjustment screw (423), and the elastic pressing machine (412) is connected to the encoder (411) and the pressing roller (413), and the lifting platform (312) is provided with a marking position transverse adjustment screw (422), and the marking position transverse adjustment screw (422) is connected to the marking position vertical adjustment screw (423), and the marking position vertical adjustment screw (423) is connected to the inkjet printer (421), and a computer system (2) is provided on one side of the upper housing (352) of the cabinet.

7. The flat tube online visual inspection system according to claim 6, characterized in that: The computer system (2) comprises a synchronizer module (21), a data processor module (22), a detection server module (23), a data storage module (24) and a terminal human-machine interface (25), and the terminal human-machine interface (25) is provided on one side of the upper housing (352) of the cabinet.

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