Automatic defect detection device for film production line

Abstract

The invention relates to the technical field of film detection, in particular to an automatic defect detection device for a film production line, which comprises a detection frame, a visual detection mechanism for detecting film defects is arranged on the detection frame, two sides of the detection frame are respectively provided with a pair of tensioning conveying frames, and the inner side of the detection frame is fixedly connected with a fixing frame. Through the arrangement of the chain, the following mechanism, the moving mechanism and other structures, when the visual detection mechanism finds that defects exist on the film, the marking pen can be driven to move to the position above the film, meanwhile, the main inserting rod is inserted into the chain, and due to the fact that the chain is driven by the conveying rollers, the marking pen can be driven to move to the position above the film; and the conveying roller is mainly used for controlling the conveying speed of the film, so that the conveying speed of the chain is the same as that of the film, the sliding frame and the marking pen can move along with the film, finally the marking pen is driven to draw a circle of marks on the film, and accurate marking of defects of the film is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of film detection, and particularly to an automatic defect detection device for a film production line. Background Art

[0002] During the production process of food packaging films and pharmaceutical packaging films, the quality of the film is directly related to the safety and effectiveness of the products. However, during the film production process, due to various factors such as uneven raw materials, equipment wear, and fluctuations in process parameters, various defects are likely to appear on the film surface, such as holes, scratches, wrinkles, black dots, etc. These defects not only affect the appearance of the film but also have an adverse impact on its barrier properties, mechanical properties, etc., and may even threaten the freshness, taste of food, and the stability and safety of drugs. Therefore, it is crucial to detect and mark the defect positions in the film promptly and accurately to ensure product quality and production efficiency.

[0003] Although existing automatic defect detection devices have improved the detection efficiency and accuracy to a certain extent, there are still some deficiencies in defect marking. For example, some devices use inkjet marking. Although automatic marking can be achieved, the inkjet system is prone to problems such as clogging and ink drying, and the ink may contaminate the film surface, affecting the film's performance. Some other devices use a labeling machine to automatically apply labels. This method requires additional label materials, increasing production costs, and the labeling process may cause secondary damage to the film. There are also some devices that only display defect information through sound and light alarms or the system interface and cannot directly mark on the film, which is not convenient for subsequent repair and processing.

[0004] Therefore, an automatic defect detection device for a film production line is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic defect detection device for a film production line to solve the drawbacks existing in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: an automatic defect detection device for a film production line, comprising an inspection frame, the inspection frame is provided with a visual inspection mechanism for detecting film defects, a pair of tensioning and conveying frames are provided on both sides of the inspection frame, a fixed frame is fixedly connected to the inner side of the inspection frame, a pair of conveying rollers are rotatably connected to the inner side of the fixed frame, both sides of the conveying roller located above are fixedly connected to driving sprockets through the outer wall of the fixed frame, a pair of driven sprockets are fixedly connected to the outer wall of one of the transmission rollers on the tensioning and conveying frame, a chain is transmission-connected between the driving sprocket and the driven sprocket, a top plate is obliquely fixedly connected to the side wall of the inspection frame, a bottom platform is provided under the top plate, a lifting plate is provided under the top plate, a sliding frame is provided at the bottom end of the lifting plate, a moving frame is slidably connected to the inner side of the sliding frame, a disc is rotatably connected to the bottom end of the moving frame, a marker pen is detachably provided at the bottom end of the disc, a following mechanism for following the movement of the film is provided on both sides of the sliding frame, and a moving mechanism for driving the marker pen to move is also provided.

[0007] In the above technical solution, further, the top of the base is tilted, and the inclined surface at the top of the base has the same inclination angle as the top plate, a drive motor is fixedly connected to the inner side of the detection frame, and the output end of the drive motor is fixedly connected to one of the side walls of the drive sprocket.

[0008] In the above technical solution, further, the moving mechanism includes a moving motor, three upper electric telescopic cylinders are fixedly connected to the top of the top plate, the output ends of the three upper electric telescopic cylinders pass through the bottom of the top plate and are fixedly connected to the top of the lifting plate, the moving motor is fixedly connected to the inner side of the sliding frame, the inner side of the sliding frame is rotatably connected to a threaded rod, the output end of the moving motor is fixedly connected to the side wall of the threaded rod, and the threaded rod is threaded through and connected to the inner wall of the moving frame.

[0009] In the above technical solution, further, a rotating motor is fixedly connected to the inner side of the moving frame, and an output end of the rotating motor is fixedly connected to the top of the disc.

[0010] In the above technical scheme, further, the following mechanism includes a main plug rod, follower frames are slidably connected on both sides of the lifting plate, and cross frames are slidably connected on the inner sides of the follower frames, and the cross frames are fixedly connected to the outer walls of the sliding frames on both sides. A pair of main plug rods are provided, and both sides of the bottom ends of the main plug rods are inclined, and telescopic cylinders are laterally slidably connected on the inner sides of the cross frames. The main plug rods are longitudinally slidably connected to the inner sides of the telescopic cylinders, and a pair of upper springs are fixedly connected between the outer walls of the telescopic cylinders and the inner sides of the cross frames on both sides, and side plates are fixedly connected at the four corners of the top of the lifting plate, and lower springs are fixedly connected between the side plates away from the conveying roller and the outer walls of the following frames.

[0011] In the above technical solution, further, a secondary insertion rod is longitudinally slidably connected to the inner side of the following frame and away from the main insertion rod, and the two sides of the bottom end of the secondary insertion rod are inclined. A return spring is fixedly connected between the outer wall of the secondary insertion rod and the inner top end of the following frame. A through groove is formed in the side wall of the telescopic cylinder, an upper groove is formed in the side wall of the main insertion rod, and the top end of the upper groove is inclined. A lower groove is formed in the side wall of the secondary insertion rod, and the bottom end of the lower groove is inclined. An extrusion rod is arranged between the upper groove and the lower groove. The side end of the extrusion rod is set as a smooth arc surface. The outer wall of the following frame is fixedly connected with an adjusting electric telescopic cylinder. The output end of the adjusting electric telescopic cylinder passes through the inner side of the following frame and is fixedly connected to the side wall of the extrusion rod. A positioning spring is fixedly connected between the inner top end of the telescopic cylinder and the top end of the main insertion rod.

[0012] In the above technical solution, further, a lower electric telescopic cylinder is fixedly connected to the side wall of the following frame, and the output end of the lower electric telescopic cylinder penetrates through the inner side of the following frame. A magnet is fixedly connected to the inner side of the following frame and close to the horizontal frame. The horizontal frame is made of iron material.

[0013] In the above technical solution, further, a touch sensor is fixedly connected to the inner side of the following frame. The touch sensor is electrically connected to the lower electric telescopic cylinder through a controller.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Through the arrangement of structures such as a chain, a following mechanism, and a moving mechanism, when the vision detection mechanism detects a defect on the film, the present invention can drive the marker pen to move above the film, and at the same time insert the main insertion rod into the chain. Since the chain is driven by a conveying roller, and the conveying roller is mainly used to control the conveying speed of the film, the conveying speed of the chain and the film is the same. Thus, the sliding frame and the marker pen can move along with the film, and finally drive the marker pen to draw a circle on the film for marking, so as to achieve precise marking of the defective part of the film.

[0016] 2. Through the arrangement of structures such as an adjusting electric telescopic cylinder, a lower electric telescopic cylinder, and an extrusion rod, during the marking process, when the vision detection mechanism detects that there is still a defect point at a position close to the previous defective part, and the marker pen cannot quickly reset for marking, the secondary insertion rod can be inserted into the chain to move along, and at the same time the main insertion rod will be pulled out. Subsequently, the lower electric telescopic cylinder will push the sliding frame and the marker pen forward. Then, the main insertion rod is inserted and the secondary insertion rod is pulled out, so that the marker pen can be moved forward to mark the front defective position, ensuring quick marking of defects with close distances. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top-down three-dimensional structural schematic diagram of the detection device of the present invention;

[0018] Figure 2 Schematic diagram of the front full-section three-dimensional structure of the detection device of the present invention;

[0019] Figure 3 Schematic diagram of the side three-dimensional structure of the detection rack of the present invention;

[0020] Figure 4 Schematic diagram of the bottom platform, lifting plate and chain of the present invention in an upward view three-dimensional structure;

[0021] Figure 5 For the attachment of the present invention Figure 4 Schematic diagram of the partial enlarged structure at position A in

[0022] Figure 6 Schematic diagram of the partial upward view three-dimensional structure of the lifting plate of the present invention;

[0023] Figure 7 Schematic diagram of the partial three-dimensional structure of the following frame and the sliding frame when the following frame is opened of the present invention;

[0024] Figure 8 Schematic diagram of the side full-section three-dimensional structure of the following frame of the present invention;

[0025] Figure 9 Schematic diagram of the separated three-dimensional structure of the moving frame and the rotating motor of the present invention;

[0026] Figure 10 Schematic diagram of the overall appearance structure of the main plug rod, secondary plug rod and adjusting electric telescopic cylinder of the present invention.

[0027] In the figure: 1, detection rack; 2, visual detection mechanism; 3, tensioning conveyor rack; 4, fixed rack; 5, conveyor roller; 6, driving sprocket; 7, driven sprocket; 8, chain; 9, top plate; 10, bottom platform; 11, lifting plate; 12, sliding frame; 13, moving frame; 14, disc; 15, marker pen; 16, driving motor; 17, moving motor; 18, threaded rod; 19, rotating motor; 20, main plug rod; 21, following frame; 22, cross frame; 23, upper spring; 24, side plate; 25, lower spring; 26, secondary plug rod; 27, return spring; 28, upper groove; 29, lower groove; 30, extrusion rod; 31, adjusting electric telescopic cylinder; 32, lower electric telescopic cylinder; 33, magnet; 34, telescopic cylinder; 35, touch sensor; 36, upper electric telescopic cylinder; 37, positioning spring. Detailed implementation manners

[0028] In order to be able to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0029] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed below.

[0030] In actual use, it is found that some devices use inkjet marking. Although automatic marking can be achieved, the inkjet system is prone to problems such as clogging and ink drying, and the ink may contaminate the surface of the film, affecting the performance of the film. Some other devices use a labeling machine to automatically attach labels. This method requires additional label materials, increasing production costs, and the labeling process may cause secondary damage to the film. There are also some devices that only display defect information through audible and visual alarms or system interfaces and cannot directly mark the film, which is not convenient for subsequent repair and processing. To solve the above problems, the following structure is specifically invented.

[0031] As Figures 1 - 10 shown, an automatic defect detection device for a film production line includes a detection frame 1. A visual detection mechanism 2 for detecting film defects is provided on the detection frame 1. The visual detection mechanism 2 mainly uses a high-brightness LED linear condenser cold light source to illuminate the surface of the production line. For film materials with high light transmittance, the light source is below the film and the camera is above the film to take images, and transmitted light is used to detect defects on the film surface. Subsequently, the image information on the film surface is converted into an electrical signal and transmitted to an image processing system. After receiving the image signal transmitted by the line array camera, the image processing system converts the image into a digital signal according to information such as pixel distribution, brightness, and color. The processor uses different algorithms to process the digitalized image, extracts key features of the image, such as position, quantity, area, length, shape, etc., and then analyzes and judges these features according to preset conditions and allowances to determine whether there are defects and information such as the size, position, and type of the defects.

[0032] A pair of tension transmission frames 3 are provided on both sides of the detection frame 1. A fixed frame 4 is fixedly connected to the inner side of the detection frame 1. A pair of transmission rollers 5 are rotatably connected to the inner side of the fixed frame 4. Both sides of the upper transmission roller 5 pass through the outer wall of the fixed frame 4 and are fixedly connected with driving sprockets 6. A pair of driven sprockets 7 are fixedly connected to the outer wall of the transmission roller on one of the tension transmission frames 3. A chain 8 is connected between the driving sprocket 6 and the driven sprocket 7. A top plate 9 is obliquely and fixedly connected to the side wall of the detection frame 1. A bottom table 10 is provided below the top plate 9. Through the setting of the bottom table 10, it is convenient to limit the bottom end of the film and facilitate the marker pen 15 to mark on the film. A lifting plate 11 is provided below the top plate 9. A sliding frame 12 is provided at the bottom end of the lifting plate 11. A moving frame 13 is slidably connected to the inner side of the sliding frame 12. A disc 14 is rotatably connected to the bottom end of the moving frame 13. A marker pen 15 is detachably provided at the bottom end of the disc 14. Here, it should be noted that the marker pen 15 is fixed at the eccentric position at the bottom end of the disc 14. Thus, through the rotation of the disc 14, the marker pen 15 can be driven to make a circular mark. At the same time, the marker pen 15 uses a water-based marker pen, which is environmentally friendly and pollution-free, suitable for production environments with high environmental protection requirements. At the same time, it has a relatively fast drying speed and is suitable for defect marking of films with high environmental protection requirements, such as food packaging films, pharmaceutical packaging films, etc. Follow-up mechanisms for following the movement of the film are provided on both sides of the sliding frame 12, and a moving mechanism for driving the marker pen 15 to move is also provided. At the same time, through the setting of the bottom table 10, it is convenient to limit the bottom end of the film and facilitate the marker pen 15 to mark on the film;

[0033] Moreover, the top end of the bottom table 10 is obliquely arranged, and the inclination angle of the inclined surface at the top end of the bottom table 10 is the same as that of the top plate 9. A driving motor 16 is fixedly connected to the inner side of the detection frame 1, and the output end of the driving motor 16 is fixedly connected to the side wall of one of the driving sprockets 6;

[0034] The moving mechanism includes a moving motor 17. Three upper electric telescopic cylinders 36 are fixedly connected to the top end of the top plate 9. The output ends of the three upper electric telescopic cylinders 36 pass through the bottom end of the top plate 9 and are fixedly connected to the top end of the lifting plate 11. The moving motor 17 is fixedly connected to the inner side of the sliding frame 12. A threaded rod 18 is rotatably connected to the inner side of the sliding frame 12. The output end of the moving motor 17 is fixedly connected to the side wall of the threaded rod 18, and the threaded rod 18 is threadedly connected through the inner side wall of the moving frame 13. Here, it should be noted that a grating ruler can be set on the moving mechanism to ensure that the moving frame 13 accurately moves to the defect position for marking through system control;

[0035] A rotating motor 19 is fixedly connected to the inner side of the moving frame 13, and the output end of the rotating motor 19 is fixedly connected to the top end of the disc 14. The disc 14 is driven to rotate by the rotating motor 19;

[0036] The following mechanism includes a main insertion rod 20. Follow-up frames 21 are slidably connected to both sides of the lifting plate 11. Horizontal frames 22 are slidably connected to the inner sides of the follow-up frames 21. The horizontal frames 22 are fixedly connected to both sides of the outer wall of the sliding frame 12. There are a pair of main insertion rods 20. Both sides of the bottom end of the main insertion rod 20 are inclined. Telescopic cylinders 34 are horizontally slidably connected to the inner sides of the horizontal frames 22. The main insertion rods 20 are longitudinally slidably connected to the inner sides of the telescopic cylinders 34. A pair of upper springs 23 are fixedly connected between both sides of the outer wall of the telescopic cylinder 34 and the inner side of the horizontal frame 22. Side plates 24 are fixedly connected to the four corners of the top end of the lifting plate 11. Lower springs 25 are fixedly connected between the side plate 24 on the side away from the conveying roller 5 and the outer wall of the follow-up frame 21;

[0037] During the detection of film defects, first, the film is passed through the tensioning conveyor frame 3 and then through between the conveying rollers 5, and then through another set of tensioning conveyor frames 3 and wound onto the winding device. Then, the visual inspection mechanism 2 can be controlled to start to detect the film defects. At the same time, the driving motor 16 is controlled to start to drive the conveying roller 5 and the driving sprocket 6 to rotate. At the same time, the driven sprocket 7 is driven to rotate under the transmission of the chain 8. Then, when the visual inspection mechanism 2 detects that there are defects in the film, the controller controls the upper electric telescopic cylinder 36 to start to drive the lifting plate 11 to move downward, and at the same time drives the follow-up frame 21, the sliding frame 12, the moving frame 13 and the marking pen 15 to move downward, and drives the main insertion rod 20 to move above the chain 8. Then, the main insertion rod 20 is inserted into the chain 8. During this process, if the main insertion rod 20 is not aligned with the hole on the chain 8, under the extrusion of the chain 8, the inclined surface of the main insertion rod 20 will be pushed, so that the main insertion rod 20 and the telescopic cylinder 34 slide in the horizontal frame 22, and at the same time compress and stretch the upper springs 23 on both sides. Furthermore, under the extrusion, the bottom end of the main insertion rod 20 is inserted into the hole of the chain 8. At this time, the marking pen 15 also moves to the film;

[0038] During this process, the controller will control the moving motor 17 to start to drive the threaded rod 18 to rotate, and then drive the moving frame 13 connected by threads to slide in the sliding frame 12, and at the same time drive the marking pen 15 to move, so that the marking pen 15 moves above the defect position in advance. Then, during the process that the chain 8 drives the main insertion rod 20, the follow-up frame 21 and the sliding frame 12 to move on the lifting plate 11, the controller controls the rotation motor 19 to start to drive the disc 14 to rotate, so as to drive the marking pen 15 to rotate and mark the film defect. At the same time, the lower spring 25 will be gradually compressed. Finally, after the marking is completed, the controller controls the upper electric telescopic cylinder 36 to start to reset, and at the same time drives the main insertion rod 20 to be pulled out of the hole of the chain 8. Finally, the extrusion on the sliding frame 12 is released, and the follow-up frame 21 is pushed to reset under the elastic force of the lower spring 25.

[0039] And it should be noted here that when the visual inspection mechanism 2 detects a defect, the system controls the upper electric telescopic cylinder 36 to start and drive the lifting plate 11 to move downward, so that the marker pen 15 moves to the film. Subsequently, the time when the chain 8 pushes the main insertion rod 20 to compress the upper spring 23 on one side and drive the cross frame 22 to move can be calculated, and there will be an error in the middle, which can be ignored. Because the cutting range of the subsequent defective part of the film is very large, errors are allowed in the design. Thus, the marker pen 15 is set at the corresponding position, so that when the defective position is transmitted under the marker pen 15, the marker pen 15 can poke beside the defective part of the film, and at the same time, the sliding frame 12 moves along with the chain 8.

[0040] In summary, through the design of the above structure, when the visual inspection mechanism 2 discovers a defect on the film, it can drive the marker pen 15 to move above the film, and at the same time insert the main insertion rod 20 into the chain 8. Since the chain 8 is driven by the conveying roller 5, and the conveying roller 5 is mainly used to control the conveying speed of the film, the conveying speed of the chain 8 and the film is the same. Thus, the sliding frame 12 and the marker pen 15 can move along with the film, and finally drive the marker pen 15 to draw a circle on the film for marking, so as to achieve precise marking of the defective part of the film.

[0041] On the basis of the above embodiment, it is found in use that if there are also defects at positions close to the defective position of the film, at this time, the sliding frame 12 cannot be quickly reset for the next marking operation, thus affecting the normal operation of the device. To solve the above problems, the above structure is further improved.

[0042] A secondary insertion rod 26 is longitudinally slidably connected to the inner side of the following frame 21 and away from the main insertion rod 20, and the bottom ends on both sides of the secondary insertion rod 26 are inclined. A reset spring 27 is fixedly connected between the outer wall of the secondary insertion rod 26 and the inner top end of the following frame 21. A through groove is provided on the side wall of the telescopic cylinder 34, an upper groove 28 is provided on the side wall of the main insertion rod 20, and the top end of the upper groove 28 is inclined. A lower groove 29 is provided on the side wall of the secondary insertion rod 26, and the bottom end of the lower groove 29 is inclined. An extrusion rod 30 is provided between the upper groove 28 and the lower groove 29. The side end of the extrusion rod 30 is set as a smooth arc surface. A regulating electric telescopic cylinder 31 is fixedly connected to the outer wall of the following frame 21, and the output end of the regulating electric telescopic cylinder 31 passes through the inner side of the following frame 21 and is fixedly connected to the side wall of the extrusion rod 30. A positioning spring 37 is fixedly connected between the inner top end of the telescopic cylinder 34 and the top end of the main insertion rod 20;

[0043] A lower electric telescopic cylinder 32 is fixedly connected to the side wall of the following frame 21, and the output end of the lower electric telescopic cylinder 32 penetrates through the inner side of the following frame 21. A magnet 33 is fixedly connected to the inner side of the following frame 21 and close to the cross frame 22, and the cross frame 22 is made of iron material;

[0044] A touch sensor 35 is fixedly connected to the inside of the following frame 21. The touch sensor 35 is electrically connected to the lower electric telescopic cylinder 32 through a controller. Through the setting of the touch sensor 35, when the horizontal frame 22 moves to the other side of the following frame 21, it will touch the touch sensor 35. Then the touch sensor 35 will transmit a signal to the controller, and the controller will control the lower electric telescopic cylinder 32 to quickly reset.

[0045] Before use, when programming, it is necessary to set the adjustment electric telescopic cylinder 31 to start under specified conditions. The specified conditions are that the distance between two defects is too close and the sliding frame 12 cannot be reset. The controller will control the adjustment electric telescopic cylinder 31 to start, thereby driving the extrusion rod 30 to move. The arc surface of the extrusion rod 30 extrudes the inclined surface of the upper groove 28, so that the main insertion rod 20 slides upward in the telescopic cylinder 34, and at the same time compresses the positioning spring 37. At the same time, through the sliding of the extrusion rod 30, the arc surface of the extrusion rod 30 will extrude the inclined surface of the lower groove 29, so that the secondary insertion rod 26 is inserted into the hole of the chain 8 (it should be noted here that the positions of the main insertion rod 20 and the secondary insertion rod 26 are fixed, and the distance between each hole of the chain 8 is also fixed. Therefore, when the main insertion rod 20 is inserted, the secondary insertion rod 26 can be directly inserted into the hole of the chain 8 without deviation), and the reset spring 27 is compressed. Thus, the sliding frame 12 is in a state of being released from extrusion at this time.

[0046] During this process, the controller needs to control the upper electric telescopic cylinder 36 to start, driving the lifting plate 11 to move up a part, lifting the marker pen 15 from the film, but not pulling out the secondary insertion rod 26 from the chain 8. Then the moving motor 17 can be controlled to start to change the position of the marker pen 15. If there is no need to change, there is no need to operate. Then the following frame 21 will continue to move with the chain 8. Then the lower electric telescopic cylinder 32 is controlled to start to push the horizontal frame 22 to move, so that the horizontal frame 22 moves away from the magnet 33 and drives the sliding frame 12 to move, thereby pushing the marker pen 15 forward, making the marker pen 15 move to the defect. Then the adjustment electric telescopic cylinder 31 is controlled to start to retract, thereby releasing the extrusion on the upper groove 28 and the lower groove 29. Under the elastic force of the positioning spring 37, the main insertion rod 20 is pushed into the hole of the chain 8. At the same time, the horizontal frame 22 touches the touch sensor 35, and the controller controls the lower electric telescopic cylinder 32 to quickly reset. Finally, the rotation motor 19 can be controlled to start to mark the defect. During this process, when the secondary insertion rod 26 is pulled out from the chain 8, the thrust on the following frame 21 will be released. Then, under the elastic force of the lower spring 25, the following frame 21 is pushed to move beside the horizontal frame 22 and is adsorbed by the magnet 33 to continue to move with the horizontal frame 22.

[0047] In summary, through the design of the above structure, during the marking process, when the visual detection mechanism 2 detects that there are still defect points at a subsequent similar position after the previous defect, and the marker pen 15 cannot be quickly reset for marking, the secondary insertion rod 26 is inserted into the chain 8 to move along with it, and at the same time, the main insertion rod 20 is pulled out. Subsequently, the lower electric telescopic cylinder 32 pushes the sliding frame 12 and the marker pen 15 forward. Then, the main insertion rod 20 is inserted and the secondary insertion rod 26 is pulled out, and the marker pen 15 can be moved forward to mark the defect position ahead, ensuring the quick marking of defects with similar distances and avoiding the phenomenon of missed marking.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention.

[0049] Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An automated defect detection device for a film production line, comprising a detection frame (1), and a visual detection mechanism (2) for detecting film defects is provided on the detection frame (1), characterized in that: On both sides of the detection frame (1), there is a pair of tensioning and conveying frames (3). Inside the detection frame (1), there is a fixed frame (4) fixedly connected. Inside the fixed frame (4), there is a pair of conveying rollers (5) rotatably connected. On both sides of the upper conveying roller (5), they pass through the outer wall of the fixed frame (4) and are fixedly connected with driving sprockets (6). On the outer wall of the driving roller on one of the tensioning and conveying frames (3), there are a pair of driven sprockets (7) fixedly connected. A chain (8) is drivingly connected between the driving sprocket (6) and the driven sprocket (7). On the side wall of the detection frame (1), there is an inclined fixed top plate (9). Below the top plate (9), there is a bottom table (10). Below the top plate (9), there is a lifting plate (11). At the bottom end of the lifting plate (11), there is a sliding frame (12). Inside the sliding frame (12), there is a moving frame (13) slidably connected. At the bottom end of the moving frame (13), there is a rotatably connected disc (14). At the bottom end of the disc (14), there is a detachably installed marker pen (15). On both sides of the sliding frame (12), there are following mechanisms for following the movement of the film, and there is also a moving mechanism for driving the movement of the marker pen (15).

2. The automated defect detection device for a film production line according to claim 1, characterized in that: Moreover, the top end of the bottom table (10) is inclined, and the inclined surface of the top end of the bottom table (10) has the same inclination angle as the top plate (9). Inside the detection frame (1), there is a driving motor (16) fixedly connected. The output end of the driving motor (16) is fixedly connected to the side wall of one of the driving sprockets (6).

3. An automated defect detection device for a thin film production line according to claim 1, characterized in that: The moving mechanism includes a moving motor (17). At the top end of the top plate (9), there are three upper electric telescopic cylinders (36) fixedly connected. The output ends of the three upper electric telescopic cylinders (36) pass through the bottom end of the top plate (9) and are fixedly connected to the top end of the lifting plate (11). The moving motor (17) is fixedly connected inside the sliding frame (12). Inside the sliding frame (12), there is a threaded rod (18) rotatably connected. The output end of the moving motor (17) is fixedly connected to the side wall of the threaded rod (18). And the threaded rod (18) is threadedly connected through the inner side wall of the moving frame (13).

4. An automated defect detection device for a thin film production line according to claim 1, characterized in that: Inside the moving frame (13), there is a rotary motor (19) fixedly connected. The output end of the rotary motor (19) is fixedly connected to the top end of the disc (14).

5. An automated defect detection device for a thin film production line according to claim 1, characterized in that: The following mechanism includes a main insertion rod (20). On both sides of the lifting plate (11), there are slidingly connected following frames (21). Inside each following frame (21), there is a horizontally slidingly connected cross frame (22). The cross frames (22) are fixedly connected to both sides of the outer wall of the sliding frame (12). There are a pair of main insertion rods (20). Both sides of the bottom end of the main insertion rod (20) are inclined. Inside each cross frame (22), there is a horizontally slidingly connected telescopic cylinder (34). The main insertion rods (20) are longitudinally slidingly connected inside the telescopic cylinders (34). Between both sides of the outer wall of the telescopic cylinder (34) and the inside of the cross frame (22), there are fixedly connected a pair of upper springs (23). At the four corners of the top end of the lifting plate (11), there are fixedly connected side plates (24). Between the side plate (24) on the side away from the conveying roller (5) and the outer wall of the following frame (21), there are fixedly connected lower springs (25).

6. The automatic defect detection device for a film production line according to claim 5, characterized in that: Inside the following frame (21) and on the side away from the main insertion rod (20), there is a longitudinally slidingly connected secondary insertion rod (26). Both sides of the bottom end of the secondary insertion rod (26) are inclined. Between the outer wall of the secondary insertion rod (26) and the inner top end of the following frame (21), there is a fixedly connected return spring (27). There is a through groove on the side wall of the telescopic cylinder (34), and there is an upper groove (28) on the side wall of the main insertion rod (20). The top end of the upper groove (28) is inclined. There is a lower groove (29) on the side wall of the secondary insertion rod (26). The bottom end of the lower groove (29) is inclined. There is a pressing rod (30) between the upper groove (28) and the lower groove (29). The side end of the pressing rod (30) is set as a smooth arc surface. The outer wall of the following frame (21) is fixedly connected with an adjusting electric telescopic cylinder (31). The output end of the adjusting electric telescopic cylinder (31) passes through the inside of the following frame (21) and is fixedly connected to the side wall of the pressing rod (30). Between the inner top end of the telescopic cylinder (34) and the top end of the main insertion rod (20), there is a fixedly connected positioning spring (37).

7. An automatic defect detection device for a thin film production line according to claim 5, characterized in that: The side wall of the following frame (21) is fixedly connected with a lower electric telescopic cylinder (32). The output end of the lower electric telescopic cylinder (32) passes through the inside of the following frame (21). Inside the following frame (21) and on the side close to the cross frame (22), there is a fixedly connected magnet (33) through. The cross frame (22) is made of iron material.

8. An automatic defect detection device for a film production line according to claim 7, characterized in that: Inside the following frame (21), there is a fixedly connected touch sensor (35). The touch sensor (35) is electrically connected to the lower electric telescopic cylinder (32) through a controller.

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