Film flaw detection device and detection method thereof

Abstract

The invention discloses a thin film flaw detection device and a detection method thereof, and relates to the technical field of detection equipment, the structure of a thin film flaw detection device in the prior art is optimized and improved, and a plurality of telescopic barrel body carrying frames are utilized to realize flexible supporting of a plurality of material coils; hoisting is not needed in the supporting process, and damage to the material coil is small; when the film image is collected, the image of the shadow of the film is collected for processing and detection, so that the detection effect is improved; the technical effects that the film flaw detection device is relatively good in detection effect, not prone to leak detection, high in applicability, convenient and efficient in feeding and discharging and not prone to damage material rolls in the feeding and discharging process are achieved.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a thin film defect detection device and its detection method. Background Technology

[0002] In the film production and processing technology, finished product inspection is one of the core processes; defect detection of films before they leave the factory can effectively control the quality of films entering the market.

[0003] In the prior art, film defect detection devices generally include a frame for carrying the film roll, a conveying assembly, and an image acquisition device. The film to be inspected is conveyed from the film roll to the image acquisition device for image acquisition, and then wound onto a new film roll. The defects of the film are found through image processing, which replaces manual inspection, greatly improves the accuracy of the operation, and reduces the generation of errors.

[0004] While the above solution can replace manual inspection of film defects and is highly efficient, it has the following problems:

[0005] Firstly, the basis for the film defect detection device to judge film defects comes from the film image captured by the image acquisition device. However, some defects (that may exist on the film) have little color difference from the film (especially for colored films), which can easily lead to missed detection. If the film is simply illuminated by supplemental lighting to overcome the above problem, the effect is limited.

[0006] Secondly, existing film defect detection devices are mostly fixed on the ground and difficult to move, resulting in a limited range of roll specifications that they can handle and poor applicability.

[0007] Thirdly, large coils need to be hoisted onto and off the machine frame. The loading and unloading process is cumbersome, inefficient, and the coils are easily damaged when the hoisting equipment comes into contact with them.

[0008] Therefore, there is a need for a film defect detection device that has relatively good detection effect, is not easy to miss, has strong applicability, is convenient and efficient in loading and unloading, and is not easy to damage the film roll during the loading and unloading process. Summary of the Invention

[0009] This application provides a film defect detection device, which solves the technical problems of existing film defect detection devices, such as easy omissions, poor applicability, cumbersome and complicated loading and unloading processes, and easy damage to the film roll due to contact between the lifting device and the roll during hoisting, due to the limitation of its own structure. The device achieves the technical effects of relatively good detection effect, less omissions, strong applicability, convenient and efficient loading and unloading, and less damage to the roll during loading and unloading.

[0010] This application provides a thin film defect detection device, including a lamp and an image acquisition device, as well as four cylindrical carriers, a connector, and an imaging component;

[0011] The four cylindrical carriers are arranged in pairs, for a total of two groups, and are symmetrically set within the same group. The two groups are used to support the positioning feeding drum and the receiving drum, respectively.

[0012] The cylindrical carrier includes a base carrier, an insertion cone, and a bottom telescopic carrier;

[0013] The insertion cone is conical in shape, with its axis parallel to the horizontal ground. The end furthest from the tip is positioned on the base carrier and rotates in a controlled manner around its own axis.

[0014] The bottom of the telescopic carrier is placed on the ground, and the top is fixed to the bottom of the base carrier, allowing it to extend and retract in a controlled manner.

[0015] During testing, both the feeding drum and the take-up drum rotate in mid-air, driven by the insertion cone; the two drum carriers in the same group are fixed together by a connecting body.

[0016] The image acquisition device simultaneously acquires image information of the thin film and the shadow of the thin film on the imaging component;

[0017] The imaging component is located on the ground directly below the film between the unloading and take-up drums. It is a horizontally placed strip with a smooth top surface and is used to project the shadow of the film.

[0018] Furthermore, the imaging component is an imaging plate; the imaging plate is a horizontally placed strip with a smooth and monochromatic top surface.

[0019] Preferably, the imaging component includes a bottom support and a strip-shaped imaging body;

[0020] The bottom support is a strip-shaped plate composed of multiple horizontally placed rigid plates spliced ​​together. The top surface is smooth and can be spliced ​​together to achieve the required length.

[0021] The strip-shaped image body is generally spool-shaped, including a roll body, an image strip body, and a carrier frame;

[0022] The roll body is a horizontally placed cylindrical roll body, and the carrier frame is a rigid support; there are two roll bodies and two carrier frames. The roll body is rotatably connected to the carrier frame around its own axis and rotates in a controlled manner.

[0023] The image tape is a light-colored cloth tape, with both ends wound and positioned on two roll bodies. During use, the bottom surface is always in close contact with the top surface of the bottom support.

[0024] Preferably, the structure of the bottom support body is the same as that of the strip-shaped image body, and the two are arranged one above the other; the image strip of the strip-shaped image body is closely attached to the top surface of the image strip of the bottom support body, and the image strip of the bottom support body is closely attached to the ground.

[0025] Preferably, the image strip of the strip image body is composed of multiple colored fabric strips spliced ​​together one by one. When detecting films of different colors, the rotation of the two rolls is controlled in a coordinated manner to expose the fabric strips of different colors, thereby making the contrast between the defective areas and the normal areas of the film more significant.

[0026] Preferably, it also includes a marking component;

[0027] The marking component is placed on the ground and located near one end of the take-up drum, and includes a bottom carrier, a sliding frame, a load-bearing support component, and a guide marking component;

[0028] The base carrier is a vertical telescopic rod that extends and retracts in a controlled manner. The top is equipped with a compression spring that acts as a buffer and a rigid block positioned on top of the compression spring that acts as a connector.

[0029] The sliding frame is slidably positioned on a rigid block and slides in a controlled horizontal direction, with the sliding direction perpendicular to the axis of the take-up drum.

[0030] The load-bearing support assembly is positioned on top of the sliding frame and includes a first carrier plate, a second carrier plate, and a top wheel.

[0031] Both the first and second carrier plates are vertically arranged rigid plates; during testing, the second carrier plate is always located at the bottom of the take-up roll, and the top of the first carrier plate is close to the end of the take-up roll.

[0032] The top wheel is a bullseye ball bearing and is fixed to the top of the second carrier plate;

[0033] The guide marking assembly is used to guide the movement of the marking sheet or rod, so that the marking sheet or rod can be inserted into the gap between the take-up roll and the film about to be wound on the take-up roll in a timely manner.

[0034] Preferably, the marking device is a marker sheet;

[0035] The guide marker assembly includes a guide block, a guide post, a marker tape carrier, and a rotating drum;

[0036] Both the guide block and the guide post are positioned on one side of the first carrier plate;

[0037] The guide post is used to guide the marker tape to bend at a small distance and a large angle, so that the marker tape carried on the marker tape will detach from the marker tape.

[0038] The marker tape between the guide block and the guide post is in a horizontal position;

[0039] The rotating drums are positioned on one side of the first carrier plate, and there are two of them, located below the guide block; the marking strip is a non-metallic strip with one side coated with self-adhesive, and both ends are wound and positioned on the two rotating drums respectively, always in a taut state and the adhesive-free side is always in close contact with the top surface of the guide block and the guide post.

[0040] The marking sheets are rectangular plastic sheets or rectangular paper sheets, which are pasted on the marking sheet carrier tape and arranged in rows.

[0041] Preferably, the marking device is a marking rod;

[0042] The guide marking assembly includes a guide tube, a rotating drum, and a cutting body;

[0043] The guide tube is a rigid bent rod with a smooth inner wall. It is fixed to one side of the first carrier plate and is in a horizontal position near the top opening.

[0044] The rotating drum is located at the bottom of the guide tube, and there is one of them, positioned on one side of the first carrier plate;

[0045] The cutting body is positioned at the top of the guide tube and is an electric cutting blade used for timely controlled cutting of the marking rod;

[0046] The marking rod is a rubber or plastic flexible rod, one end of which is wound and positioned on a rotating drum, inserted from the bottom of the guide tube, passing through the guide tube, and protruding from the top of the guide tube.

[0047] Preferably, when using a marking rod for marking, different marking effects can be achieved by controlling the length of the marking rod cut in each marking, using a cutting body to carve regular marks on the marking rod, controlling the insertion angle of the marking rod cut in each marking, and / or printing marks on the marking rod, thereby marking different information.

[0048] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0049] By optimizing and improving the structure of existing film defect detection devices, multiple retractable cylindrical carriers are used to flexibly support multiple rolls of film. The support process requires no lifting, minimizing damage to the rolls. During image acquisition, images of the film's shadow are simultaneously captured for processing and detection, improving detection efficiency. This effectively solves the technical problems of existing film defect detection devices, which are prone to missed detections due to their structural limitations, have poor applicability, and involve cumbersome loading and unloading processes that can easily damage the rolls during lifting. Therefore, this film defect detection device achieves relatively better detection results, is less prone to missed detections, has strong applicability, and offers convenient and efficient loading and unloading without damaging the rolls during the process. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the thin film defect detection device of this application;

[0051] Figure 2 This is a schematic diagram of the cylindrical support frame;

[0052] Figure 3 This is a schematic diagram showing the positional relationship between the plate-shaped bottom support and the strip-shaped image body;

[0053] Figure 4 A simplified structural diagram of the image tape;

[0054] Figure 5 This is a schematic diagram showing the positional relationship between the strip-shaped bottom support and the strip-shaped image body;

[0055] Figure 6 This is a schematic diagram showing the positional relationship between the guide marker component and the take-up reel;

[0056] Figure 7 A partial structural diagram of the guide marker component;

[0057] Figure 8 A schematic diagram of the overall structure of the guide marker component;

[0058] Figure 9 This is a schematic diagram showing the positional relationship between the marker tape and the marker sheet;

[0059] Figure 10 This is a schematic diagram showing the positional relationship between the first carrier plate, guide block, guide post, and marker tape.

[0060] Figure 11 A schematic diagram of the structure of the first carrier plate, which has two rotatable parts;

[0061] Figure 12 This is a simplified structural diagram of the marker rod.

[0062] In the picture:

[0063] Material feeding drum 001, material receiving drum 002, film 003, drum frame 100, base carrier 110, insertion cone 120, bottom telescopic carrier 130, top rod body 140, connecting body 200, bearing frame body 300, connecting frame body 310, combined support body 320, lamp 330, top camera assembly 400, bottom camera assembly 500, image plate 610, bottom support body 620, drum body 710, image belt body 720, carrier frame 730, bottom carrier 810, sliding frame body 820, first carrier plate 831, second carrier plate 832, top wheel body 833, guide block 841, guide column 842, marking plate 843, marking plate carrier belt 844, rotating drum 845, marking body 846, marking rod 847, guide tube 848, cutting body 849. Detailed Implementation

[0064] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0065] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0067] Example 1

[0068] like Figure 1 and Figure 2 As shown, the film defect detection device of this application includes four cylindrical carriers 100, connectors 200, lamp holders, lamps 330, camera holders, image acquisition devices, imaging components, power components, and control units.

[0069] For ease of description and understanding, the following text uses "unwinding reel 001" to refer to the old reel (with the rigid tube wound with the film to be tested) and "rewinding reel 002" to refer to the new reel (with the rigid tube wound with the film that has already been tested).

[0070] Four cylindrical carriers are arranged in pairs, totaling two groups, and are symmetrically set within the same group. The two groups are used to support the positioning feeding drum 001 and the receiving drum 002, respectively.

[0071] The cylindrical carrier 100 includes a base carrier 110, an insertion cone 120, a bottom telescopic carrier 130, and a top rod 140 positioned on top of the base carrier 110.

[0072] The basic carrier 110 is a rigid block that serves as a load-bearing and connecting element;

[0073] The insertion cone 120 is a conical block with its axis parallel to the horizontal ground. The end away from the tip is positioned on the base carrier 110 and rotates around its own axis under the coordinated control of the power component and the control unit.

[0074] The main body of the bottom telescopic carrier 130 is a vertical telescopic rod structure, with the bottom placed on the ground and the top fixed to the bottom of the base carrier 110. It extends and retracts under the coordinated control of the power component and the control unit.

[0075] The bottom telescopic carrier 130 includes a base frame and a telescopic body; the base frame is a rigid frame that is in direct contact with the ground to prevent the telescopic body from tipping over; the telescopic body is a manual telescopic rod, an electric telescopic rod, a telescopic cylinder, or a telescopic hydraulic cylinder, which is controlled to extend and retract.

[0076] The top rod 140 is a vertical rigid rod used to provide positioning points for the installation of the connector 200.

[0077] During testing, the two insertion cones 120 of the same set of cylindrical carriers 100 are inserted into the two ends of the feeding drum 001 or the take-up drum 002 respectively; the feeding drum 001 and the take-up drum 002 are both suspended and rotated under the drive of the insertion cones 120; the combination of the feeding drum 001, the take-up drum 002 and the film 003 is in the shape of a roll; the distance between the two sets of cylindrical carriers 100 is greater than 1 meter.

[0078] The two cylindrical carrier frames 100 in the same group are fixed together by a connector 200;

[0079] The connector 200 is a horizontally placed rope that is detachably fixed to the cylinder carrier 100 and is always taut during use. Two connectors 200 are positioned on the two cylinder carriers 100 in the same group. One connector 200 is fixed to the two top rods 140 in the same group, connecting the top rods 140 of the two cylinder carriers 100 in the same group together. The other connector 200 is fixed to the two bottom telescopic carriers 130 in the same group, connecting the bottom telescopic carriers 130 of the two cylinder carriers 100 in the same group together. When handling unloading drums 001 and take-up drums 002 of different specifications, the fixing points of the connectors 200 are different, thus maintaining their taut state.

[0080] Preferably, the connecting body 200 is a winch structure, which is a combination of a winch and a winch rope, and its length can be adjusted as needed.

[0081] The lamp holder is a rigid frame that serves to support the lamp 330 and can be placed on the ground or positioned on the cylindrical carrier 100.

[0082] The lamp 330 is a horizontally arranged strip light source, one or more in number, positioned on the lamp holder and set at the top of the space between the unloading drum 001 and the take-up drum 002 under the support of the lamp holder. It serves to supplement the light for the image acquisition device, and also to cause the film 003 between the unloading drum 001 and the take-up drum 002 to generate a shadow and project the shadow onto the imaging component.

[0083] Preferably, the lamp holder includes a support frame 300; the support frame 300 is a U-shaped rigid rod, arranged horizontally, with its ends fixed to two top rods 140 of the same group of cylindrical carrier frames 100; the support frame 300 includes a connecting frame 310 and a combined support 320; the connecting frame 310 is a horizontally placed rigid straight rod, numbered two, and fixed to two top rods 140 of the same group of cylindrical carrier frames 100 respectively; the combined support 320 is a rigid rod composed of multiple rods spliced ​​together, with both ends fixed to the ends of the two connecting frames 310 away from the top rods 140 respectively; one of the rods constituting the combined support 320 can be manually or automatically extended or retracted; the lamp 330 is positioned at the bottom of the combined support 320.

[0084] The camera frame is a rigid frame that serves to support the image acquisition device and can be placed on the ground or positioned on the cylindrical carrier 100.

[0085] The image acquisition device is used to set image information by taking pictures. The acquired image information is processed to determine whether there are defects in the film under inspection, which is the existing technology.

[0086] The image acquisition device simultaneously acquires image information of the thin film 003 and the shadow of the thin film 003 on the imaging component;

[0087] The image acquisition device includes a top camera assembly 400 and a bottom camera assembly 500;

[0088] Both the top camera assembly 400 and the bottom camera assembly 500 are industrial cameras, one or more in number, fixed on the camera frame, located diagonally above the film 003 between the unloading drum 001 and the take-up drum 002, and diagonally above the imaging assembly, respectively, to collect image information of the film 003 and the shadow of the film 003 on the imaging assembly.

[0089] The imaging component is located on the ground directly below the film 003 between the unloading drum 001 and the take-up drum 002. It is a horizontally placed strip with a smooth and monochromatic top surface, used to project the shadow of the film 003.

[0090] Furthermore, the imaging component is an imaging plate 610; the imaging plate 610 is a horizontally placed strip-shaped plate with a smooth and monochromatic top surface.

[0091] Preferably, to ensure applicability, the image board 610 is composed of multiple rigid boards spliced ​​together and can be spliced ​​to the required length as needed.

[0092] The power assembly is used to provide power for the operation of each component of the film defect detection device of this application, and the control unit plays the role of controlling the coordinated operation of each component of the film defect detection device. Both are existing technologies and will not be described in detail here.

[0093] Preferably, the control unit is a combination of a programmable logic controller, an image processing module, and control buttons.

[0094] When using the film defect detection device of this application, the steps are as follows:

[0095] In its initial state, the unloading drum 001 is placed on the ground or on a workshop transfer vehicle;

[0096] When testing is required, first move the insertion cones 120 of the two cylinder carriers 100 to a state coaxial with the unloading drum 001, and then insert the two insertion cones 120 into both ends of the unloading drum 001.

[0097] After this, the connecting body 200 is used to connect and fix the cylinder carrier 100 located at both ends of the unloading drum 001, so as to maintain the stable support of the cylinder carrier 100 for the unloading drum 001; and the bottom telescopic carrier 130 of the cylinder carrier 100 is controlled to extend so that the unloading drum 001 is suspended in the air.

[0098] Adjust the posture of the other two cylinder carriers 100, use the other two cylinder carriers 100 and the connector 200 to support and fix the take-up drum 002, and make the take-up drum 002 suspended in the air, so that the take-up drum 002 is parallel to the unloading drum 001 and the ends of the two are coplanar.

[0099] The film 003 on the unloading drum 001 is wound and positioned on the take-up drum 002; the unloading drum 001 and the take-up drum 002 are controlled to rotate in coordination to maintain the taut state of the film 003 between the unloading drum 001 and the take-up drum 002, and to maintain the tension of the film 003 so that the film 003 is gradually wound on the take-up drum 002.

[0100] During the rotation of the unloading drum 001 and the take-up drum 002, the control lamp 330 emits light, illuminating the film 003 between the unloading drum 001 and the take-up drum 002 and projecting the shadow of the film 003 onto the imaging assembly; the top camera assembly 400 and the bottom camera assembly 500 capture images; the shadow of the film 003 can effectively and significantly reflect defects such as stains, damage, and wrinkles on the film 003, and compared with directly capturing images of the film, the defective areas are more obvious and easier to identify;

[0101] After the film 003 on the unloading drum 001 is wound onto the take-up drum 002, the drum carriers 100 located on both sides of the take-up drum 002 are controlled to lower the take-up drum 002.

[0102] Preferably, the lamp 330 is slidably positioned on the lamp holder and slides horizontally under the coordinated control of the power component and the control unit. After a defect is detected, the control unit controls the lamp 330 to move horizontally and judges whether the position of the defect projected on the image component changes accordingly through the image obtained by the bottom camera component 500, thereby reducing the probability of misjudgment.

[0103] Preferably, after a defect is detected, the unloading drum 001 and the take-up drum 002 are controlled to rotate in tandem, first relaxing and then tightening the film 003 located between the unloading drum 001 and the take-up drum 002. During this process, the image information obtained by the image acquisition device is processed to rule out the possibility that the defect is caused by the looseness or tightness of the film 003.

[0104] Preferably, in order to reduce the influence of external light sources and airflow on the detection effect, the film defect detection device of this application has a cover that serves to protect against wind and light when in use.

[0105] Preferably, the bottom telescopic carrier 130 is controlled by the control unit to extend and retract. During the detection process, based on the amount of film 003 on the unloading drum 001 and the take-up drum 002, multiple bottom telescopic carriers 130 are coordinated to rise and fall, so as to keep the film 003 located between the unloading drum 001 and the take-up drum 002 in a horizontal state.

[0106] Preferably, a film guiding device is provided between the unloading drum 001 and the take-up drum 002 for adjusting the tightness and tension of the film 003 as needed. The film guiding device is set close to the unloading drum 001 or the take-up drum 002, which is the prior art and will not be described in detail here.

[0107] Preferred, such as Figure 3As shown, to avoid the impact of the seams of the imaging plate 610 on the detection effect, the imaging assembly includes a bottom support 620 and a strip-shaped imaging body; the bottom support 620 is a strip-shaped plate composed of multiple horizontally placed rigid plates spliced ​​together, with a smooth top surface, which can be spliced ​​together to achieve the required length; the strip-shaped imaging body is generally roll-shaped, including a roll body 710, an imaging strip 720, and a carrier frame 730; the roll body 710 is a horizontally placed cylindrical roll, and the carrier frame 730 is a rigid support; there are two roll bodies 710 and two carrier frames 730. The image belt 720 is rotatably connected to the carrier frame 730 around its own axis and rotates under the coordinated control of the power unit and the control unit. The image belt 720 is a light-colored cloth belt, with both ends wound and positioned on two rollers 710 respectively. During use, the bottom surface is always in close contact with the top surface of the bottom support 620. Before testing, after the bottom support 620 is set up, the two rollers 710 are placed at both ends of the bottom support 620, and the taut state of the image belt 720 is maintained by controlling the rotation of the rollers 710. The presence of the bottom support 620 can reduce the wear of the image belt 720 during movement.

[0108] To facilitate arrangement and improve the applicability of the film defect detection device of this application, preferably, as follows: Figure 5 As shown, the structure of the bottom support 620 is the same as that of the strip-shaped image body, and the two are arranged one above the other; the image strip 720 of the strip-shaped image body is closely attached to the top surface of the image strip 720 of the bottom support 620, and the image strip 720 of the bottom support 620 is closely attached to the ground.

[0109] Preferred, such as Figure 4 As shown, the image strip 720 of the strip image body is composed of multiple colored strips spliced ​​together one by one. When detecting films of different colors, the rotation of the two roll bodies 710 is controlled in a coordinated manner to expose the different colored strips, thereby making the difference between the defective area and the normal area of ​​the film 003 more significant.

[0110] Preferably, the lamp 330 also has a variety of different colors. When detecting films of different colors, different light colors are used, which makes the contrast between the defective areas and normal areas of the film 003 more significant.

[0111] Preferably, the image strip 720 of the bottom support 620 is a metal strip.

[0112] Preferably, all the cylindrical carriers 100 are slidably positioned on the ground.

[0113] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0114] This invention solves the technical problems of existing film defect detection devices, which are prone to missed detections, have poor applicability, and have cumbersome and complicated loading and unloading processes, and are prone to damage to the film rolls during hoisting due to contact between the hoisting device and the rolls. It achieves the technical effects of a film defect detection device with relatively better detection effect, less chance of missed detection, strong applicability, convenient and efficient loading and unloading, and less risk of damage to the film rolls during the loading and unloading process.

[0115] Example 2

[0116] To further enhance the practicality of the film defect detection device of this application and add a defect marking function, this embodiment adds a marking component based on the above embodiment. The defect area is marked by timely inserting a sheet into the take-up roll 002. Specifically:

[0117] like Figures 6 to 8 As shown, the marking component is placed on the ground and located near one end of the take-up drum 002, and includes a bottom carrier 810, a sliding frame 820, a load-bearing support component, and a guide marking component;

[0118] The main body of the base carrier 810 is a vertically arranged rigid telescopic rod, which is controlled by the control unit to extend and retract;

[0119] A vertically placed metal compression spring is fixed to the top of the bottom carrier 810, and the metal compression spring plays a buffering role.

[0120] A rigid block is fixed to the top of the metal compression spring, and the rigid block serves as a connector.

[0121] The sliding frame 820 is slidably positioned on the rigid block and slides horizontally under the coordinated control of the power component and the control unit. The direction of sliding is perpendicular to the axis of the take-up drum 002.

[0122] The load-bearing support assembly is positioned at the top of the sliding frame 820 and is used to support the guide mark assembly;

[0123] The load-bearing support assembly includes a first carrier plate 831, a second carrier plate 832, and a top wheel body 833;

[0124] The first carrier plate 831 and the second carrier plate 832 are both vertically arranged rigid plates; during testing, the second carrier plate 832 is always located at the bottom of the take-up drum 002, and the top of the first carrier plate 831 is close to the end of the take-up drum 002.

[0125] The top roller body 833 is a bullseye ball bearing with the ball facing upwards, fixed to the top of the second carrier plate 832, and always in close contact with the bottom of the take-up drum 002 during inspection;

[0126] The guide marking assembly is used to guide the movement of the marking sheet 843, so that the marking sheet 843 can be inserted into the gap between the take-up roll 002 and the film 003 that is about to be wound on the take-up roll 002 in a timely manner.

[0127] The guide marking assembly includes a guide block 841, a guide post 842, a marking sheet carrier tape 844, and a rotating drum 845;

[0128] The guide block 841 is a hard block with a smooth arc surface on the top, and is fixed to one side of the first carrier plate 831;

[0129] The guide post 842 is a horizontally placed cylinder that is rotatably connected to one side of the first carrier plate 831 around its own axis and is located on the same side of the first carrier plate 831 as the guide block 841. It is used to guide the marking sheet carrier tape 844 to bend at a small distance and a large angle, so that the marking sheet 843 carried on the marking sheet carrier tape 844 is detached from the marking sheet carrier tape 844. The guide post 842 is located near the edge of the first carrier plate 831 and near the edge of the film 003 between the unloading drum 001 and the take-up drum 002.

[0130] The distance between the guide post 842 and the guide block 841 is greater than 3 cm. The top surface of the guide post 842 is at the same height as the top surface of the guide block 841. The marking strip carrier 844 between the guide block 841 and the guide post 842 is horizontal and its height is the same as or slightly higher (the difference is less than 0.5 cm) the height of the film 003 that is about to be wound on the take-up roll 002.

[0131] The rotating drum 845 is a cylindrical drum with a built-in micro motor, positioned on one side of the first carrier plate 831 and on the same side of the guide block 841. There are two of them, located below the guide block 841, and they are used to wind up and release the marking sheet carrier tape 844 respectively. The marking sheet carrier tape 844 is a non-metallic tape with one side coated with self-adhesive. The material is preferably plastic or paper. Both ends are wound and positioned on the two rotating drums 845 respectively. The marking sheet carrier tape 844 exposed outside the rotating drums 845 is in an inverted U-shape, always in a taut state, and the non-adhesive side is always in close contact with the top surface of the guide block 841 and the guide post 842.

[0132] like Figure 9 As shown, the marking sheet 843 is a rectangular plastic sheet or a rectangular paper sheet, which is pasted on the marking sheet carrier tape 844 and arranged in rows.

[0133] When the film defect detection device of this application embodiment is used:

[0134] After arranging the feed roll 001 and take-up roll 002 and keeping the film 003 between them taut and horizontal, arrange the marking assembly;

[0135] When arranging the marking assembly, the top roller 833 of the marking assembly abuts against the bottom of the take-up drum 002 and the guide post 842 is close to the end of the take-up drum 002. The guide post 842 is also close to the gap between the take-up drum 002 and the film 003 that is about to be wound on the take-up drum 002, so that the marking sheet 843 that has detached from the marking sheet carrier 844 can be inserted into the gap between the take-up drum 002 and the film 003 that is about to be wound on the take-up drum 002 after it is detached.

[0136] During inspection, if a defective area is found, the marking tape 844 can be moved when the defective area is about to be wound into the take-up roll 002. A marking tape 843 attached to it can be filled into the gap between the take-up roll 002 and the exposed film 003. At the same time, the sliding frame 820 can be moved laterally to insert the marking tape 843 into the gap and fix it. Finally, the sliding frame 820 can be reset to wait for the next marking.

[0137] Preferably, after the inspection is completed, a manual re-inspection is performed based on the image of the defective area obtained by the image acquisition device; during the manual re-inspection, if a detection error is found in the defective area or it should not be identified as a defect, the marker 843 can be torn off or pulled out to cancel the marking.

[0138] Preferably, the corners of the marking piece 843 are all rounded.

[0139] Preferably, the marker sheet 843 is pasted onto the marker sheet carrier tape 844 by a transfer process.

[0140] Preferably, each marker sheet 843 has a code.

[0141] Preferably, a marker body 846 is also fixed on the first carrier plate 831; the marker body 846 is a printer, and the marker body 846 and the guide block 841 sandwich the marker sheet carrier tape 844 carrying the marker sheet 843 in the middle; before the marker sheet 843 is separated from the marker sheet carrier tape 844, a mark is printed on it; the mark is preferably an encoding.

[0142] Example 3

[0143] To further improve the practicality of the film defect detection device of this application without damaging the film 003 during marking, the structure of the guide marking component in this application has been optimized and improved based on the above embodiments. The defect area is marked by timely insertion of a rod into the take-up drum 002, specifically as follows:

[0144] like Figure 10As shown, the guiding and marking component is used to guide the movement of the marking rod 847, so that the marking rod 847 can be timely inserted into the gap between the winding drum 002 and the film 003 that is about to be wound on the winding drum 002;

[0145] The guiding and marking component includes a guiding tube 848, a rotating drum 845 and a cutting body 849;

[0146] The guiding tube 848 is a rigid bent rod, integrally in the shape of "Γ", with a smooth inner wall, fixed on one side of the first carrier plate 831, and the position near the top opening is in a horizontal state;

[0147] The rotating drum 845 is located at the bottom of the guiding tube 848, and there is one of it. It is a cylindrical drum with a built-in micro motor, positioned on one side of the first carrier plate 831 and on the same side of the first carrier plate 831 as the guiding tube 848;

[0148] The cutting body 849 is positioned at the top end of the guiding tube 848. It is an electric cutting knife, which is a prior art and is used to timely and controllably cut the marking rod 847 (cut marking rods 847 of different lengths);

[0149] The marking rod 847 is a rubber or plastic soft rod. One end is wound and positioned on the rotating drum 845, penetrates into the guiding tube 848 from the bottom of the guiding tube 848, passes through the guiding tube 848, and exposes from the top opening of the guiding tube 848.

[0150] When the film defect detection device of the embodiment of the present application is in use:

[0151] When arranging the marking component, make the top wheel body 833 of the marking component abut against the bottom of the winding drum 002 and make the cutting body 849 close to the end of the winding drum 002 and close to the gap between the winding drum 002 and the film 003 that is about to be wound on the winding drum 002, so that the marking rod 847 can just be inserted into the gap between the winding drum 002 and the film 003 that is about to be wound on the winding drum 002;

[0152] During the detection, if a defective area is found, when the defective area is about to be wound into the winding drum 002, the movement of the marking rod 847 can be controlled so that the end of the marking rod 847 is filled into the gap between the winding drum 002 and the exposed film 003; at the same time, control the crosswise movement of the sliding frame body 820, insert the marking rod 847 into the gap to fix it and cut the marking rod 847 at the same time; finally, reset the sliding frame body 820 and wait for the next marking.

[0153] Preferably, to avoid uncontrolled movement of the marker rod 847, a clamping assembly is also positioned on the first carrier plate 831; the clamping assembly is located near the bottom opening of the guide tube 848 to clamp the marker rod 847, and the main body consists of two horizontally placed rollers that are always in close contact with the marker rod 847 and rotate in a controlled manner, which is the prior art. During operation, it drives the marker rod 847 to pass through the guide tube 848.

[0154] Preferably, when marking with the marking rod 847, different marking effects (marking different information) can be achieved by controlling the length of the marking rod 847 cut during each marking.

[0155] Preferably, when marking with the marking rod 847, regular marking marks can be engraved on the marking rod 847 using the cutting body 849 to achieve different marking effects (marking different information).

[0156] Preferred, such as Figure 10 As shown, there are two first carrier plates 831 and two guide marking components on them. The two first carrier plates 831 are arranged in parallel and symmetrically. When marking with the marking rod 847, different marking effects (marking different information) can be achieved by changing the length and number of the marking rod 847 used (cut off) for the current marking.

[0157] Preferred, such as Figure 11 As shown, the first carrier plate 831 is divided into upper and lower parts. The upper part is rotatably connected to the lower part around an axis perpendicular to the ground and rotates under the coordinated control of the power component and the control unit. The guide tube 848 is located on the first carrier plate 831 in the upper part. When marking with the marking rod 847, different marking effects can be achieved by changing the angle, length and number of the marking rod 847 used for marking (cutting out) in this marking (marking different information to distinguish different types and degrees of defects).

[0158] Preferred, such as Figure 11 and Figure 12 As shown, a marker body 846 is also fixed on the first carrier plate 831; the marker body 846 is a printer, which is set near the top opening of the guide tube 848; after the marker rod 847 protrudes from the guide tube 848, it prints a mark or code on it.

[0159] Preferably, after the inspection is completed, a manual re-inspection is performed based on the image of the defect area obtained by the image acquisition device; if an error is found in the defect area during the manual re-inspection, the marker rod 847 can be pulled out to cancel the marking.

[0160] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A thin film defect detection device, comprising a lamp (330) and an image acquisition unit, characterized in that: It also includes four cylindrical carriers (100), connectors (200), and imaging components; The four cylindrical carriers (100) are arranged in pairs, for a total of two groups, and are symmetrically arranged in the same group. The two groups are used to support the positioning feeding drum (001) and the receiving drum (002) respectively. The cylindrical carrier (100) includes a base carrier (110), an insertion cone (120), and a bottom telescopic carrier (130); The insertion cone (120) is conical, with its axis parallel to the horizontal ground. The end away from the tip is positioned on the base carrier (110) and rotates in a controlled manner around its own axis. The bottom of the telescopic carrier (130) is placed on the ground, and the top is fixed to the bottom of the base carrier (110), and it can extend and retract in a controlled manner. During testing, both the feeding drum (001) and the receiving drum (002) are suspended and rotating under the drive of the insertion cone (120); the two drum carriers (100) in the same group are fixed together by the connecting body (200); The image acquisition device simultaneously acquires image information of the thin film (003) and the shadow of the thin film (003) on the imaging component; The imaging component is located on the ground directly below the film (003) between the unloading drum (001) and the take-up drum (002). It is a horizontally placed strip with a smooth top surface and is used to project the shadow of the film (003).

2. The thin film defect detection device as described in claim 1, characterized in that: The imaging component is an imaging plate (610); the imaging plate (610) is a horizontally placed strip with a smooth and monochromatic top surface.

3. The thin film defect detection device as described in claim 1, characterized in that: The imaging assembly includes a bottom support (620) and a strip imaging body; The bottom support (620) is a strip-shaped plate composed of multiple horizontally placed rigid plates spliced ​​together. The top surface is smooth and can be spliced ​​together to meet the required length. The strip-shaped image body is generally spool-shaped, including a roll body (710), an image strip body (720), and a carrier frame (730); The roll body (710) is a horizontally placed cylindrical roll, and the carrier frame (730) is a rigid support; there are two roll bodies (710) and two carrier frames (730). The roll body (710) is rotatably connected to the carrier frame (730) around its own axis and rotates in a controlled manner. The image tape (720) is a light-colored cloth tape, with both ends wound and positioned on two roll bodies (710). When in use, the bottom surface is always in close contact with the top surface of the bottom support body (620).

4. The thin film defect detection device as described in claim 3, characterized in that: The structure of the bottom support (620) is the same as that of the strip image body, and the two are arranged one above the other; the image strip (720) of the strip image body is closely attached to the top surface of the image strip (720) of the bottom support (620), and the image strip (720) of the bottom support (620) is closely attached to the ground.

5. The thin film defect detection device as described in claim 3, characterized in that: The image strip (720) of the strip image body is composed of multiple colored strips spliced ​​together one by one. When detecting films of different colors, the rotation of the two roll bodies (710) is controlled in a coordinated manner to expose the different colored strips, thereby making the difference between the defective area and the normal area of ​​the film (003) more significant.

6. The film defect detection device according to any one of claims 1 to 5, characterized in that: It also includes a tag component; The marking component is placed on the ground and located near one end of the take-up drum (002), and includes a bottom carrier (810), a sliding frame (820), a load-bearing support component, and a guide marking component; The bottom carrier (810) is a vertical telescopic rod that is controlled to extend and retract. The top is provided with a compression spring that plays a buffering role and a rigid block positioned on the top of the compression spring that plays a connecting role. The sliding frame (820) is slidably positioned on the rigid block and slides in a controlled horizontal direction, with the sliding direction perpendicular to the axis of the take-up drum (002). The load-bearing support assembly is positioned on top of the sliding frame (820) and includes a first carrier plate (831), a second carrier plate (832), and a top wheel (833); The first carrier plate (831) and the second carrier plate (832) are both vertically arranged rigid plates; during testing, the second carrier plate (832) is always located at the bottom of the take-up drum (002), and the top of the first carrier plate (831) is close to the end of the take-up drum (002); The top wheel body (833) is a bullseye ball bearing, which is fixed to the top of the second carrier plate (832); The guide marking assembly is used to guide the movement of the marking sheet or rod, so that the marking sheet or rod can be inserted into the gap between the take-up roll (002) and the film (003) that is about to be wound on the take-up roll (002) in a timely manner.

7. The thin film defect detection device as described in claim 6, characterized in that: The marking device is a marker plate (843); The guide marking assembly includes a guide block (841), a guide post (842), a marking sheet carrier tape (844), and a rotating spool (845); The guide block (841) and guide post (842) are both positioned on one side of the first carrier plate (831); The guide post (842) is used to guide the marker tape (844) to bend at a small distance and a large angle, so that the marker (843) carried on the marker tape (844) will be separated from the marker tape (844); The marker tape (844) between the guide block (841) and the guide post (842) is in a horizontal state; The rotating drum (845) is positioned on one side of the first carrier plate (831), and there are two of them, located below the guide block (841); the marking strip (844) is a non-metallic strip with self-adhesive coating on one side, and its two ends are respectively wound and positioned on the two rotating drums (845), always in a taut state and the non-adhesive side is always in close contact with the top surface of the guide block (841) and the guide post (842); The marking sheet (843) is a rectangular plastic sheet or a rectangular paper sheet, which is pasted on the marking sheet carrier tape (844) and arranged in rows.

8. The thin film defect detection device as described in claim 6, characterized in that: The marking mechanism is the marking rod (847); The guide marking assembly includes a guide tube (848), a rotating drum (845), and a cutter (849); The guide tube (848) is a rigid bent rod with a smooth inner wall. It is fixed to one side of the first carrier plate (831) and is in a horizontal position near the top opening. The rotating drum (845) is located at the bottom of the guide tube (848), and there is one of them, positioned on one side of the first carrier plate (831); The cutting body (849) is positioned at the top of the guide tube (848) and is an electric cutting blade used to cut the marking rod (847) in a timely manner; The marking rod (847) is a rubber or plastic flexible rod, one end of which is wound and positioned on the rotating drum (845), and it passes through the bottom of the guide tube (848) and protrudes from the top opening of the guide tube (848).

9. The thin film defect detection device as described in claim 8, characterized in that: When marking with the marking rod (847), different marking effects can be achieved by controlling the length of the marking rod (847) cut in the current marking, using the cutting body (849) to carve regular marks on the marking rod (847), controlling the insertion angle of the marking rod (847) cut in the current marking, and / or printing marks on the marking rod (847), thus marking different information.

10. A method for detecting defects in thin films, characterized in that: The accompanying film defect detection device as described in claim 1; the steps are as follows: In its initial state, the unloading drum (001) is placed on the ground or on a workshop transfer vehicle; When testing is required, first move the insertion cones (120) of the two cylinder carriers (100) to a state coaxial with the unloading drum (001), and then insert the two insertion cones (120) into both ends of the unloading drum (001); After this, the cylinder carrier (100) of the same group is connected and fixed by the connector (200); the bottom telescopic carrier (130) of the cylinder carrier (100) is controlled to extend so that the unloading drum (001) is suspended in the air; Adjust the posture of the other two cylinder carriers (100), use the other two cylinder carriers (100) and the connector (200) to support and fix the take-up drum (002), and make the take-up drum (002) suspended in the air, so that the take-up drum (002) is parallel to the unloading drum (001) and the ends of the two are coplanar. The film (003) on the unloading drum (001) is wound and positioned on the take-up drum (002); the unloading drum (001) and the take-up drum (002) are controlled to rotate in coordination; during rotation, the lamp (330) is controlled to emit light and the image acquisition device acquires images.

Images