Film circuit board AOI detection equipment

Abstract

The invention provides film circuit board AOI detection equipment, and relates to the technical field of detection equipment. The film circuit board AOI detection equipment comprises a first bottom plate, a control box is fixedly arranged on the rear side of the upper end of the first bottom plate, a film connecting segment difference mechanism is fixedly arranged on one side of the upper end of the first bottom plate through threads, and an unwinding mechanism is fixedly arranged on one side of the front end of the control box; a winding mechanism is fixedly arranged on the other side of the front end of the control box, an electric measuring mechanism is fixedly arranged in the middle of the upper end of the first bottom plate through threads, and a segment difference NG code spraying mechanism is fixedly arranged on the other side of the upper end of the first bottom plate through threads; a guiding mechanism is fixedly arranged on one side of the upper end of the segment difference NG code spraying mechanism through threads, and a line scanning appearance is fixedly arranged at the upper end of the film connecting segment difference mechanism through threads. Through cooperative application of a plurality of detection modes, various quality problems can be quickly and effectively found during detection, and the product quality is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and particularly to an AOI detection equipment for thin-film circuit boards. Background Art

[0002] A thin-film circuit is a miniaturized circuit that integrates electronic components and circuits on a thin-film material, and is widely used in the fields of electronic products, communication, medical treatment, and aerospace. It manufactures circuit components by depositing extremely thin metal or alloy films on the surface of a non-conductive substrate, and forms various circuit systems by connecting these components. To ensure the reliability, safety, and performance stability of the thin-film circuit, it is necessary to perform appearance and electrical tests on the thin-film circuit, which can promptly detect and solve potential problems, avoid failures in subsequent use, and ensure the quality and safety of the product. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides an AOI detection equipment for thin-film circuit boards, which solves the problem that the traditional detection equipment has a low degree of automation and still requires manual intervention in the detection process.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: an AOI detection equipment for thin-film circuit boards, including a first base plate, a control box is fixedly arranged at the rear side position of the upper end of the first base plate, a film receiving step difference mechanism is fixedly arranged at one side position of the upper end of the first base plate by means of threads, a film unwinding mechanism is fixedly arranged at one side position of the front end of the control box, a film rewinding mechanism is fixedly arranged at the other side position of the front end of the control box, an electrical test mechanism is fixedly arranged at the middle position of the upper end of the first base plate by means of threads, a step difference NG inkjet coding mechanism is fixedly arranged at the other side position of the upper end of the first base plate by means of threads, a picking mechanism is fixedly arranged at one side position of the upper end of the step difference NG inkjet coding mechanism by means of threads, and a line scan appearance is fixedly arranged at the upper end of the film receiving step difference mechanism by means of threads; The unwinding mechanism includes a first EPC deviation rectification system, and the first EPC deviation rectification system includes a first deviation rectification electric cylinder. A first deviation rectification inductor is fixedly arranged at the upper middle position on one side of the control box by means of threading. The first deviation rectification electric cylinder is connected to the first deviation rectification inductor through a power cord. The film receiving segment difference mechanism includes a film receiving platform, a first segment difference mechanism and a first mounting frame. The film receiving platform includes an upper vacuum adsorption. An upper film pressing cylinder is fixedly arranged at the upper end position on one side of the upper vacuum adsorption. The front end of the upper vacuum adsorption is fixedly connected to the first mounting frame by means of threading. The first segment difference mechanism includes a first fixed frame, an inlet guiding wheel and an outlet guiding wheel. The front and rear ends of the first fixed frame, the inlet guiding wheel and the outlet guiding wheel are fixedly installed on the first mounting frame by means of threading. The line scan appearance includes a second bottom plate. A light source X-axis is fixedly arranged at the front side position on the upper end of the second bottom plate by means of threading. A light source Y-axis is slidably arranged at one side position on the upper end of the second bottom plate. A light source body is fixedly arranged at the upper end of the light source Y-axis by means of threading. The electrical measurement mechanism includes a third bottom plate and a UVW platform. Guide columns are fixedly arranged at the four corners of the lower end of the UVW platform through a lower jig. An upper electric cylinder is fixedly arranged on the guide columns through an upper jig. The segment difference NG inkjet coding mechanism includes a third mounting frame. An NG inkjet coding mechanism body is fixedly arranged at one side position on the upper end of the third mounting frame. The NG inkjet coding mechanism body includes an inkjet Y-axis, and an inkjet X-axis is slidably arranged at the upper end of the inkjet Y-axis.

[0005] Preferably, two first servo motors are fixedly arranged at the middle position near the lower end on one side of the inner wall at the rear of the control box. The output end of the upper one of the two first servo motors is fixedly provided with a film winding transmission shaft. The output end of the lower one of the two first servo motors is fixedly provided with an unwinding transmission shaft. A first film guiding wheel is rotatably arranged at the upper end position on one side of the inner wall at the rear of the control box through a damping rotating shaft.

[0006] Preferably, a first guiding wheel is fixedly arranged at the upper middle position on one side of the first mounting frame by means of threading. A second guiding wheel is fixedly arranged at the lower middle position on one side of the first mounting frame by means of threading. The middles of the first guiding wheel and the second guiding wheel are both rotatable. A lower vacuum adsorption is fixedly arranged at the lower middle and upper position on one side of the first mounting frame by means of threading. A lower film pressing cylinder is fixedly arranged at the lower side position above the lower vacuum adsorption by means of threading. A segment difference wheel is rotatably arranged on the relative inner sides of the first fixed frame. A segment difference servo is fixedly arranged at the lower end position on the rear side of the first mounting frame. A grating scale is fixedly arranged on the relative inner sides of the first mounting frame.

[0007] Preferably, a second mounting bracket is fixedly arranged at the rear side of the upper end of the second base plate through threads. A camera X-axis is fixedly arranged at the front side of the upper end of the second mounting bracket through threads. A camera Y-axis is slidably arranged at the other side of the upper end of the second mounting bracket. At the rear side of the upper end of the camera Y-axis, a camera R-axis is fixedly arranged through threads. A line scan camera is fixedly arranged at the other side of the camera R-axis through threads.

[0008] Preferably, a CCD alignment device is fixedly arranged at one side of the upper electric cylinder through threads. An upper jig detection probe is fixedly arranged at the lower end of the upper electric cylinder. A lower electric cylinder is fixedly arranged at the middle position of the lower end of the third base plate. A lower jig detection probe is fixedly arranged at the upper end of the lower electric cylinder. Second fixing brackets are fixedly arranged at both sides of the upper end of the third base plate. Tension guide wheels are rotatably arranged in the middle of the two second fixing brackets.

[0009] Preferably, the picking mechanism comprises a third fixing bracket. Two lifting cylinders are fixedly arranged on the inner top surface of the third fixing bracket. An installation plate is fixedly arranged at the lower ends of the two lifting cylinders. An upper picking wheel is rotatably arranged in the middle of the installation plate. A picking servo is fixedly arranged at the lower rear position of the third fixing bracket. A lower picking wheel is fixedly arranged at the output end of the picking servo.

[0010] Preferably, a coding Z-axis is fixedly arranged at the front end of one side of the coding X-axis through threads. A thermal foaming coding machine is fixedly arranged at the output end of the coding Z-axis through threads. A length measuring mechanism is fixedly arranged at the front side of one end of the coding Y-axis through threads. A second step difference mechanism is fixedly arranged at the upper end of one side of the inner wall at the rear of the third mounting bracket.

[0011] Preferably, the winding mechanism comprises a second EPC deviation rectifying system. The second EPC deviation rectifying system comprises a second deviation rectifying electric cylinder. The second deviation rectifying electric cylinder is fixedly installed inside the control box through threads. A second deviation rectifying inductor is fixedly arranged at the upper middle position of the other side of the control box through threads. The second deviation rectifying electric cylinder is connected to the second deviation rectifying inductor through a power line. Two second servo motors are fixedly arranged at the lower middle position of the other side of the inner wall at the rear of the control box. A winding transmission shaft is fixedly arranged at the output end of the upper one of the two second servo motors. A film unwinding transmission shaft is fixedly arranged at the output end of the lower one of the two second servo motors. A second film passing guide wheel is rotatably arranged at the upper end of the other side of the inner wall at the rear of the control box through a damping rotating shaft.

[0012] Working principle: When in use, the film circuit board passes through the unwinding drive shaft and the film winding drive shaft. The unwinding drive shaft and the film winding drive shaft adopt a servo control system to accurately control the film winding and unwinding speeds so that they will not cause external force to the unwinding drive shaft. The EPC correction system consists of a correction electric cylinder and a correction sensor. The correction sensor senses the film position, and the correction electric cylinder adjusts the position of the unwinding drive shaft and the film winding drive shaft in real time to ensure the linear motion of the film and provide a stable AOI detection environment; After passing through the unwinding mechanism, the film body enters the film splicing step difference mechanism. The film splicing platform is used to replace the docking of film materials. The original film passes through the No. 1 guide wheel and the upper film pressing cylinder. The upper film pressing cylinder presses down. After the upper vacuum adsorbs and stabilizes the film, the film is cut flat with an intermediate knife. The lower new film passes through the No. 2 guide wheel and cooperates with the lower film pressing cylinder. The lower vacuum adsorbs and stabilizes the film, and then the film is cut flat with an intermediate knife. After that, the original film and the new film are connected with transparent tape. The step difference mechanism is used to compensate for the film AOI detection. The film is bypassed by the inlet guide wheel, the step difference wheel, and the outlet guide wheel. The step difference servo drives the step difference wheel position to compensate for the film position. The grating ruler is used to sense the position of the step difference wheel. The processed film enters the line scan appearance part. The light source body provides appropriate light conditions under the adjustment of the light source X-axis and the slidable light source Y-axis. The line scan camera scans and photographs the appearance of the film circuit board from different angles and positions under the cooperation of the camera X-axis, camera Y-axis and camera R-axis to obtain appearance image information for analysis and judgment of whether there are appearance defects and other problems. Then the film reaches the electrical testing mechanism, passes through the CCD alignment compensation UVW platform, and the film circuit board is placed on the UVW platform. The upper electric cylinder connected by the guide column drives the upper fixture and the upper fixture detection probe on it, and cooperates with the lower electric cylinder and the lower fixture detection probe at the lower end of the No. 3 bottom plate to test the electrical performance of the film circuit board. The tension guide wheel on the No. 2 fixed frame adjusts the tension of the film to ensure a stable and accurate detection process. The film after inspection is pulled forward by the upper and lower take-up wheels of the take-up mechanism under the drive of the take-up servo and the adjustment of the lifting cylinder. When the film circuit board is detected to have problems such as step difference and is determined to be an NG product, the thermal foaming inkjet printer in the step difference NG inkjet mechanism will accurately mark it under the coordinated adjustment of the inkjet X-axis, the inkjet Y-axis and the inkjet Z-axis, and the metering mechanism will simultaneously record the length information of the film transmission; Finally, the film enters the winding mechanism, and the No. 2 servo motor at the lower middle position on the other side of the inner wall at the rear side of the control box drives the winding drive shaft to perform the winding operation. The No. 2 correction sensor of the No. 2 EPC correction system monitors the position of the film, and the No. 2 correction electric cylinder performs correction. With the help of the No. 2 film guide wheel, the film winding work is completed, and the entire film circuit board inspection process is completed.

[0013] The present invention provides an AOI detection device for flexible printed circuit boards, which has the following beneficial effects: The present invention provides an AOI detection device for flexible printed circuit boards. This device integrates multiple functions such as unwind and rewind mechanisms, film splicing step difference mechanisms, step difference NG inkjet coding mechanisms, line scan appearance detection, and electrical testing, greatly improving the film detection efficiency. Moreover, multiple detection methods can comprehensively inspect the appearance and electrical performance of flexible printed circuit boards, effectively discover various quality problems, and ensure product quality.

[0014] The present invention provides an AOI detection device for flexible printed circuit boards. This device is equipped with multiple automation components such as servo motors, rectifying electric cylinders, and sensors, such as the EPC rectifying system in the unwind and rewind mechanisms and the step difference servo in the film splicing step difference mechanism. It can automatically complete operations such as unwinding, transporting, rectifying, and rewinding the film, reducing manual intervention, improving work efficiency and detection accuracy, and being convenient for use.

[0015] The present invention provides an AOI detection device for flexible printed circuit boards. The step difference NG inkjet coding mechanism of this device can achieve precise inkjet marking of step difference NG products through the cooperation of the X, Y, and Z axes of inkjet coding. At the same time, the length measuring mechanism can accurately record the film transmission length, facilitating the effective management of the production process and product information. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall axonometric schematic diagram of the present invention; Figure 2 is the axonometric schematic diagram of the unwind mechanism of the present invention; Figure 3 is the overall axonometric schematic diagram of the film splicing step difference mechanism of the present invention; Figure 4 is the axonometric schematic diagram of the first step difference mechanism of the present invention; Figure 5 is the axonometric schematic diagram of the line scan appearance of the present invention; Figure 6 is the axonometric schematic diagram of the electrical testing mechanism of the present invention; Figure 7 is the axonometric schematic diagram of the take-off mechanism at position A of the present invention; Figure 8 is the axonometric schematic diagram of the step difference NG inkjet coding mechanism of the present invention; Figure 9 is the axonometric schematic diagram of the rewind mechanism of the present invention.

[0017] Among them, 1. Unwinding mechanism; 2. Film connecting step difference mechanism; 3. Linear scan appearance; 4. Electrical measurement mechanism; 5. Taking mechanism; 6. Step difference NG inkjet coding mechanism; 7. Rewinding mechanism; 8. First base plate; 9. Control box; 101. Unwinding drive shaft; 102. Film winding drive shaft; 103. First EPC deviation rectification system; 104. First film guiding pulley; 105. First servo motor; 10301. First deviation rectification electric cylinder; 10302. First deviation rectification inductor; 201. Film connecting platform; 202. First step difference mechanism; 203. First mounting bracket; 20101. First guiding pulley; 20102. Upper film pressing cylinder; 20103. Upper vacuum adsorption; 20104. Second guiding pulley; 20105. Lower film pressing cylinder; 20106. Lower vacuum adsorption; 20201. Inlet taking guiding pulley; 20202. Step difference pulley; 20203. Grating scale; 20204. Step difference servo; 20205. Outlet taking guiding pulley; 20206. First fixing bracket; 301. Light source body; 302. Light source X-axis; 303. Light source Y-axis; 304. Linear scan camera; 305. Camera X-axis; 306. Camera Y-axis; 307. Camera R-axis; 308. Second base plate; 309. Second mounting bracket; 401. CCD alignment; 402. UVW platform; 403. Upper jig detection probe; 404. Lower jig detection probe; 405. Upper electric cylinder; 406. Lower electric cylinder; 407. Tension guiding pulley; 408. Third base plate; 409. Second fixing bracket; 410. Guide post; 501. Upper taking pulley; 502. Lower taking pulley; 503. Lifting cylinder; 504. Taking servo; 505. Third fixing bracket; 506. Mounting plate; 601. Second step difference mechanism; 602. NG inkjet coding mechanism body; 603. Metering mechanism; 604. Third mounting bracket; 60201. Thermal foaming inkjet printer; 60202. Inkjet Z-axis; 60203. Inkjet X-axis; 60204. Inkjet Y-axis; 701. Rewinding drive shaft; 702. Film unwinding drive shaft; 703. Second EPC deviation rectification system; 704. Second film guiding pulley; 705. Second servo motor; 70301. Second deviation rectification electric cylinder; 70302. Second deviation rectification inductor. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment: As Figure 1As shown in the figure, an AOI detection device for a flexible printed circuit board provided by an embodiment of the present invention includes a first base plate 8. A control box 9 is fixedly arranged at the rear side position of the upper end of the first base plate 8. A film connecting step mechanism 2 is fixedly arranged at one side position of the upper end of the first base plate 8 by means of threads. A film unwinding mechanism 1 is fixedly arranged at one side position of the front end of the control box 9. A winding mechanism 7 is fixedly arranged at the other side position of the front end of the control box 9. An electrical measurement mechanism 4 is fixedly arranged at the middle position of the upper end of the first base plate 8 by means of threads. A step NG inkjet coding mechanism 6 is fixedly arranged at the other side position of the upper end of the first base plate 8 by means of threads. A picking mechanism 5 is fixedly arranged at one side position of the upper end of the step NG inkjet coding mechanism 6 by means of threads. A line scan appearance 3 is fixedly arranged at the upper end of the film connecting step mechanism 2 by means of threads; A control box 9 is installed at the rear end of the first base plate 8, which is convenient for the installation and operation of the whole device. Multiple devices such as the film unwinding mechanism 1, the film connecting step mechanism 2, the electrical measurement mechanism 4, the line scan appearance 3, the picking mechanism 5, the step NG inkjet coding mechanism 6 and the winding mechanism 7 are used in combination, greatly improving the film detection efficiency and effectively discovering various quality problems to ensure product quality.

[0020] As Figure 2 shown, the film unwinding mechanism 1 includes a first EPC deviation rectifying system 103. The first EPC deviation rectifying system 103 includes a first deviation rectifying electric cylinder 10301. A first deviation rectifying inductor 10302 is fixedly arranged at the middle upper position of one side of the control box 9 by means of threads. The first deviation rectifying electric cylinder 10301 is connected to the first deviation rectifying inductor 10302 through a power line. Two first servo motors 105 are fixedly arranged at the middle lower position of one side of the inner wall at the rear side of the control box 9. The output end of the upper one of the two first servo motors 105 is fixedly provided with a film winding transmission shaft 102. The output end of the lower one of the two first servo motors 105 is fixedly provided with a film unwinding transmission shaft 101. A first film guiding pulley 104 is rotatably arranged at the upper end position of one side of the inner wall at the rear side of the control box 9 through a damping rotating shaft; When the first servo motor 105 located at the middle lower position of one side of the inner wall at the rear side of the control box 9 is started, the film unwinding transmission shaft 101 at its output end drives the film to start unwinding. During the unwinding process, the first EPC deviation rectifying system 103 plays a role. The first deviation rectifying inductor 10302 monitors the position of the film in real time. Once a deviation is found, the first deviation rectifying electric cylinder 10301 is controlled through the power line to perform corresponding deviation rectifying operations to ensure that the film can be transported along the correct path. At the same time, the first film guiding pulley 104 is used to assist the smooth unwinding and transportation of the film.

[0021] As Figure 3-4As shown in the figure, the film connecting step difference mechanism 2 includes a film connecting platform 201, a first step difference mechanism 202 and a first mounting frame 203. The film connecting platform 201 includes an upper vacuum adsorption 20103. An upper film pressing cylinder 20102 is fixedly arranged at the upper end position on one side of the upper vacuum adsorption 20103. The front end of the upper vacuum adsorption 20103 is fixedly connected to the first mounting frame 203 by threads. The first step difference mechanism 202 includes a first fixing frame 20206, an inlet guiding wheel 20201 and an outlet guiding wheel 20205. The front and rear ends of the first fixing frame 20206, the inlet guiding wheel 20201 and the outlet guiding wheel 20205 are fixedly installed on the first mounting frame 203 by threads. A first guiding wheel 20101 is fixedly arranged at the upper middle position on one side of the first mounting frame 203 by threads. A second guiding wheel 20104 is fixedly arranged at the lower middle position on one side of the first mounting frame 203 by threads. The middle parts of the first guiding wheel 20101 and the second guiding wheel 20104 are rotatable. A lower vacuum adsorption 20106 is fixedly arranged at the lower middle and upper position on one side of the first mounting frame 203 by threads. A lower film pressing cylinder 20105 is fixedly arranged at the lower side position of the upper end of the lower vacuum adsorption 20106 by threads. A step difference wheel 20202 is rotatably arranged on the relative inner sides of the first fixing frame 20206. A step difference servo 20204 is fixedly arranged at the lower rear position of the first mounting frame 203. A grating scale 20203 is fixedly arranged on the relative inner sides of the first mounting frame 203; The first guiding wheel 20101 and the second guiding wheel 20104 guide the film transmission. The upper vacuum adsorption 20103, the lower vacuum adsorption 20106, the upper film pressing cylinder 20102 and the lower film pressing cylinder 20105 work together to stably hold the film. The step difference wheel 20202 in the first step difference mechanism 202 processes the possible step difference problems of the film under the drive of the step difference servo 20204 and the auxiliary measurement of the grating scale 20203, ensuring the smooth progress of the subsequent detection link.

[0022] As Figure 5 As shown in the figure, the line scan appearance 3 includes a second bottom plate 308. A light source X-axis 302 is fixedly arranged at the front side position of the upper end of the second bottom plate 308 by threads. A light source Y-axis 303 is slidably arranged at one side position of the upper end of the second bottom plate 308. A light source body 301 is fixedly arranged at the upper end of the light source Y-axis 303 by threads. A second mounting frame 309 is fixedly arranged at the rear side position of the upper end of the second bottom plate 308 by threads. A camera X-axis 305 is fixedly arranged at the front side position of the upper end of the second mounting frame 309 by threads. A camera Y-axis 306 is slidably arranged at the other side position of the upper end of the second mounting frame 309. A camera R-axis 307 is fixedly arranged at the rear side position of the upper end of the camera Y-axis 306. A line scan camera 304 is fixedly arranged at the other side of the camera R-axis 307 by threads; The line scan appearance 3 is mainly used to detect the appearance defects of the film. The detection method is to fix the film and move the camera to detect the film. The light source body 301 is installed below the film and equipped with a light source X-axis 302 and a light source Y-axis 303. The line scan camera 304 is installed above the film and equipped with a camera X-axis 305, a camera Y-axis 306 and a camera R-axis 307. During detection, the light source body 301 and the line scan camera 304 move simultaneously to detect the film.

[0023] As Figure 6 shown, the electrical measurement mechanism 4 includes a third base plate 408 and a UVW platform 402. At the positions of the four corners of the upper end of the UVW platform 402, guide posts 410 are fixedly arranged through a lower jig. At the upper ends of the guide posts 410, an upper electric cylinder 405 is fixedly arranged through an upper jig. On one side of the upper electric cylinder 405, a CCD alignment 401 is fixedly arranged by means of a thread. At the lower end of the upper electric cylinder 405, an upper jig detection probe 403 is fixedly arranged. At the middle position of the lower end of the third base plate 408, a lower electric cylinder 406 is fixedly arranged. At the upper end of the lower electric cylinder 406, a lower jig detection probe 404 is fixedly arranged. At the positions on both sides of the upper end of the third base plate 408, second fixing frames 409 are fixedly arranged. Tension guide wheels 407 are rotatably arranged in the middle of the two second fixing frames 409; The electrical measurement mechanism 4 is mainly used for the function detection of the film. Through the CCD alignment 401, the UVW platform 402 is compensated and used in cooperation with the upper jig detection probe 403 and the lower jig detection probe 404 to align with the film PIN points. The upper electric cylinder 405 is controlled to press down the upper jig detection probe 403 and the lower electric cylinder 406 is controlled to raise the lower jig detection probe 404 to press and connect the film to conduct product detection. Tension guide wheels 407 are arranged on both sides of the mechanism to adjust the tension of the film to ensure the stability and accuracy of the detection process.

[0024] As Figure 7 shown, the picking mechanism 5 includes a third fixing frame 505. Two lifting cylinders 503 are fixedly arranged on the inner top surface of the third fixing frame 505. At the lower ends of the two lifting cylinders 503, a mounting plate 506 is fixedly arranged. An upper picking wheel 501 is rotatably arranged in the middle of the mounting plate 506. At the lower position at the rear side of the third fixing frame 505, a picking servo 504 is fixedly arranged. At the output end of the picking servo 504, a lower picking wheel 502 is fixedly arranged; The picking mechanism 5 is used for the middle-section picking and moving during the film detection. The picking mechanism 5 is composed of an upper picking wheel 501 and a lower picking wheel 502. Among them, the upper picking wheel 501 is installed on the lifting cylinder 503, and the lower picking wheel 502 is connected to the picking servo 504. During picking, the lifting cylinder 503 presses down, the upper picking wheel 501 presses the film and is pressed together with the lower picking wheel 502, and the picking servo 504 drives the picking wheel to feed the material.

[0025] As Figure 8As shown in the figure, the step difference NG inkjet coding mechanism 6 includes a third mounting frame 604. On one side of the upper end of the third mounting frame 604, an NG inkjet coding mechanism body 602 is fixedly arranged. The NG inkjet coding mechanism body 602 includes an inkjet Y-axis 60204. An inkjet X-axis 60203 is slidably arranged at the upper end of the inkjet Y-axis 60204. An inkjet Z-axis 60202 is fixedly arranged at the front end of one side of the inkjet X-axis 60203 by means of a thread. A thermal inkjet printer 60201 is fixedly arranged at the output end of the inkjet Z-axis 60202 by means of a thread. A length measuring mechanism 603 is fixedly arranged at the front end of one side of the inkjet Y-axis 60204 by means of a thread. On one side of the upper end of the inner wall at the rear of the third mounting frame 604, a second step difference mechanism 601 is fixedly arranged; The functional principle of the second step difference mechanism 601 is the same as that of the first step difference mechanism 202. The NG inkjet coding mechanism body 602 uses a thermal inkjet printer 60201. The thermal inkjet printer 60201 is installed on the inkjet Z-axis 60202, the inkjet X-axis 60203, and the inkjet Y-axis 60204. When spraying the NG code, the film is fixed, and the thermal inkjet printer 60201 is moved to spray the code. The length measuring mechanism 603 calculates the moving stroke of the film in real time for the position calculation of the NG inkjet coding.

[0026] As Figure 9 shown in the figure, the winding mechanism 7 includes a second EPC deviation rectifying system 703. The second EPC deviation rectifying system 703 includes a second deviation rectifying electric cylinder 70301. The second deviation rectifying electric cylinder 70301 is fixedly installed inside the control box 9 by means of a thread. A second deviation rectifying inductor 70302 is fixedly arranged at the upper middle position on the other side of the control box 9 by means of a thread. The second deviation rectifying electric cylinder 70301 is connected to the second deviation rectifying inductor 70302 through a power line. Two second servo motors 705 are fixedly arranged at the lower middle position on the other side of the inner wall at the rear of the control box 9. The output end of the upper one of the two second servo motors 705 is fixedly provided with a winding transmission shaft 701. The output end of the lower one of the two second servo motors 705 is fixedly provided with a film feeding transmission shaft 702. A second film guiding pulley 704 is rotatably arranged at the upper end position on the other side of the inner wall at the rear of the control box 9 through a damping rotating shaft; Both the winding transmission shaft 701 and the film feeding transmission shaft 702 adopt the second servo motor 705 to accurately control the film feeding speed so that it will not cause an external force impact on the unwinding transmission shaft 101. The second EPC deviation rectifying system 703 is composed of the second deviation rectifying electric cylinder 70301 and the second deviation rectifying inductor 70302. The position of the film is sensed by the second deviation rectifying inductor 70302, and the second deviation rectifying electric cylinder 70301 adjusts the positions of the winding transmission shaft 701 and the film feeding transmission shaft 702 in real time to ensure the linear movement of the film and provide a stable AOI detection environment.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An AOI detection device for a flexible printed circuit board, comprising a first base plate (8), characterized in that: A control box (9) is fixedly arranged at the rear side position of the upper end of the first base plate (8). A film connecting section difference mechanism (2) is fixedly arranged at one side position of the upper end of the first base plate (8) by means of threads. A unwinding mechanism (1) is fixedly arranged at one side position of the front end of the control box (9). A winding mechanism (7) is fixedly arranged at the other side position of the front end of the control box (9). An electric measurement mechanism (4) is fixedly arranged at the middle position of the upper end of the first base plate (8) by means of threads. A section difference NG inkjet coding mechanism (6) is fixedly arranged at the other side position of the upper end of the first base plate (8) by means of threads. A taking mechanism (5) is fixedly arranged at one side position of the upper end of the section difference NG inkjet coding mechanism (6) by means of threads. A line scan appearance (3) is fixedly arranged at the upper end of the film connecting section difference mechanism (2) by means of threads; The unwinding mechanism (1) includes a first EPC deviation rectifying system (103). The first EPC deviation rectifying system (103) includes a first deviation rectifying electric cylinder (10301). A first deviation rectifying inductor (10302) is fixedly arranged at the middle upper position of one side of the control box (9) by means of threads. The first deviation rectifying electric cylinder (10301) is connected with the first deviation rectifying inductor (10302) through a power line. The film connecting section difference mechanism (2) includes a film connecting platform (201), a first section difference mechanism (202) and a first mounting frame (203). The film connecting platform (201) includes an upper vacuum adsorption (20103). An upper film pressing cylinder (20102) is fixedly arranged at the upper end position of one side of the upper vacuum adsorption (20103). The front rear of the upper vacuum adsorption (20103) is fixedly connected with the first mounting frame (203) by means of threads. The first section difference mechanism (202) includes a first fixing frame (20206), an inlet taking guide wheel (20201) and an outlet taking guide wheel (20205). The front and rear ends of the first fixing frame (20206), the inlet taking guide wheel (20201) and the outlet taking guide wheel (20205) are fixedly installed on the first mounting frame (203) by means of threads. The line scan appearance (3) includes a second base plate (308). A light source X-axis (302) is fixedly arranged at the front side position of the upper end of the second base plate (308) by means of threads. A light source Y-axis (303) is slidably arranged at one side position of the upper end of the second base plate (308). A light source body (301) is fixedly arranged at the upper end of the light source Y-axis (303) by means of threads. The electric measurement mechanism (4) includes a third base plate (408) and a UVW platform (402). Guide posts (410) are fixedly arranged at the four corners of the upper end of the UVW platform (402) through lower jigs. An upper electric cylinder (405) is fixedly arranged at the upper ends of the guide posts (410) through an upper jig. The section difference NG inkjet coding mechanism (6) includes a third mounting frame (604). An NG inkjet coding mechanism body (602) is fixedly arranged at one side position of the upper end of the third mounting frame (604). The NG inkjet coding mechanism body (602) includes an inkjet Y-axis (60204). An inkjet X-axis (60203) is slidably arranged at the upper end of the inkjet Y-axis (60204).

2. The AOI detection device for a thin-film circuit board according to claim 1, characterized in that: On the lower-middle position of one side of the rear inner wall of the control box (9), two first servo motors (105) are fixedly arranged. The output end of the upper one of the two first servo motors (105) is fixedly provided with a film winding transmission shaft (102), and the output end of the lower one of the two first servo motors (105) is fixedly provided with a film unwinding transmission shaft (101). On the upper position of one side of the rear inner wall of the control box (9), a first film guiding pulley (104) is rotatably arranged through a damping rotating shaft.

3. The AOI detection device for a thin film circuit board according to claim 1, wherein: On the upper-middle position of one side of the first mounting frame (203), a first guiding pulley (20101) is fixedly arranged by threading. On the lower-middle position of one side of the first mounting frame (203), a second guiding pulley (20104) is fixedly arranged by threading. The middles of the first guiding pulley (20101) and the second guiding pulley (20104) are both rotatable. On the lower-middle and upper position of one side of the first mounting frame (203), a lower vacuum adsorption (20106) is fixedly arranged by threading. On the lower side of the upper end of the lower vacuum adsorption (20106), a lower film pressing cylinder (20105) is fixedly arranged by threading. A step difference wheel (20202) is rotatably arranged on the relative inner sides of the first fixing frame (20206). On the lower-rear position of the first mounting frame (203), a step difference servo (20204) is fixedly arranged. A grating scale (20203) is fixedly arranged on the relative inner sides of the first mounting frame (203).

4. An AOI detection device for a thin film circuit board according to claim 1, characterized in that: On the rear upper position of the second bottom plate (308), a second mounting frame (309) is fixedly arranged by threading. On the front upper position of the second mounting frame (309), a camera X-axis (305) is fixedly arranged by threading. On the other side of the upper end of the second mounting frame (309), a camera Y-axis (306) is slidably arranged. On the rear upper position of the camera Y-axis (306), a camera R-axis (307) is fixedly arranged by threading. On the other side of the camera R-axis (307), a line scan camera (304) is fixedly arranged by threading.

5. The AOI detection device for a thin-film circuit board according to claim 1, wherein: On one side of the upper electric cylinder (405), a CCD alignment (401) is fixedly arranged by threading. On the lower end of the upper electric cylinder (405), an upper fixture detection probe (403) is fixedly arranged. On the middle-lower position of the lower end of the third bottom plate (408), a lower electric cylinder (406) is fixedly arranged. On the upper end of the lower electric cylinder (406), a lower fixture detection probe (404) is fixedly arranged. On the upper two-side positions of the third bottom plate (408), second fixing frames (409) are fixedly arranged. In the middles of the two second fixing frames (409), tension guiding pulleys (407) are rotatably arranged.

6. The AOI detection device for a thin-film circuit board according to claim 1, wherein: The picking mechanism (5) includes a third fixed frame (505). Two lifting cylinders (503) are fixedly arranged on the inner top surface of the third fixed frame (505). An installation plate (506) is fixedly arranged at the lower ends of the two lifting cylinders (503). An upper picking wheel (501) is rotatably arranged in the middle of the installation plate (506). A picking servo (504) is fixedly arranged at the lower end position at the rear side of the third fixed frame (505). A lower picking wheel (502) is fixedly arranged at the output end of the picking servo (504).

7. An AOI detection device for a thin-film circuit board according to claim 1, characterized in that: A coding Z-axis (60202) is fixedly arranged at the front end position on one side of the coding X-axis (60203) by means of threads. A thermal foam coding machine (60201) is fixedly arranged at the output end of the coding Z-axis (60202) by means of threads. A length measuring mechanism (603) is fixedly arranged at the front end position on one side of the coding Y-axis (60204) by means of threads. A second step difference mechanism (601) is fixedly arranged at the upper end position on one side of the inner wall at the rear side of the third mounting frame (604).

8. The AOI detection device for a thin-film circuit board according to claim 1, characterized in that: The winding mechanism (7) includes a second EPC deviation rectifying system (703). The second EPC deviation rectifying system (703) includes a second deviation rectifying electric cylinder (70301). The second deviation rectifying electric cylinder (70301) is fixedly installed inside the control box (9) by means of threads. A second deviation rectifying inductor (70302) is fixedly arranged at the upper middle position on the other side of the control box (9) by means of threads. The second deviation rectifying electric cylinder (70301) is connected to the second deviation rectifying inductor (70302) through a power cord. Two second servo motors (705) are fixedly arranged at the lower middle position on the other side of the inner wall at the rear side of the control box (9). A winding transmission shaft (701) is fixedly arranged at the output end of the upper one of the two second servo motors (705). A film feeding transmission shaft (702) is fixedly arranged at the output end of the lower one of the two second servo motors (705). A second film passing guide wheel (704) is rotatably arranged at the upper end position on the other side of the inner wall at the rear side of the control box (9) through a damping rotating shaft.

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