Coiled material film defect detection device and detection method thereof

Abstract

The invention belongs to the technical field of film detection, and discloses a coiled material film defect detection device and a detection method thereof.The coiled material film defect detection device comprises a base, a support is fixedly connected to the outer wall of the top end of the base, an adjusting mechanism is arranged on the outer wall of the support, and a placing mechanism is arranged on the outer wall of the support; the placing mechanism comprises a fixing plate, a cover plate is hinged to the outer wall of the top end of the fixing plate, a fixing block is fixedly connected to the outer wall of the cover plate, an insertion block is elastically connected to the inner wall of the fixing block through a volute spiral spring, and a motor is fixedly connected to the outer wall of the fixing plate. Through cooperation of the film roller, the fixing plate and other structures, when a cylindrical film is installed, the film roller can be fixed by covering the cover plate, then the film roller and the motor can be fixed through clamping connection of the round rod and the groove, the film is conveyed or wound, convenience is achieved, and practicability is high. And therefore, the film roller is prevented from being disassembled and assembled by rotating the bolt for multiple times, and more convenience and rapidness are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of film detection, and in particular relates to a coil film defect detection device and a detection method thereof. Background Art

[0002] The roll film defect detection device is a device used to detect surface defects of roll film. It uses optics, machine vision and other technologies to perform real-time or non-real-time scanning of roll film through high-precision cameras or sensors. It can quickly and accurately detect various defects such as holes, scratches, impurities, wrinkles, etc., and can mark, classify or alarm according to the set standards to ensure that the quality of roll film products meets production requirements.

[0003] During the inspection process, the rolled film needs to be placed on a rotating roller, which is driven by the rotating roller to transport the film. When installing the cylindrical film, the rotating roller needs to be removed from the equipment, the cylindrical film is inserted on the outside of the rotating roller, and then the rotating roller is installed on the equipment to complete the fixation. Some existing technologies fix the rotating roller with bolts. When the cylindrical film needs to be installed or removed during inspection, the rotating roller needs to be disassembled and installed by turning the bolts multiple times, and other tools may need to be used for operation, which is troublesome and reduces work efficiency. Therefore, a roll film defect detection device and a detection method thereof are proposed to address the above problems. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a roll film defect detection device and a detection method thereof, which solves the problem in the prior art that it is inconvenient to disassemble and install the rotating roller when placing or removing the cylindrical film.

[0005] To achieve the above object, the present invention provides the following technical solution: a coil film defect detection device, comprising a base, a top outer wall of the base is fixedly connected to a bracket, an outer wall of the bracket is provided with an adjustment mechanism, and an outer wall of the bracket is provided with a placement mechanism;

[0006] The placement mechanism includes a fixing plate, a cover plate is hingedly connected to the top outer wall of the fixing plate, a fixing block is fixedly connected to the outer wall of the cover plate, an insert block is elastically connected to the inner wall of the fixing block via a spiral spring, a motor is fixedly connected to the outer wall of the fixing plate, a fixing tube is fixedly connected to the output shaft of the motor, a round rod is elastically connected to the inner wall of the fixing tube via a connecting spring, a protrusion and a shift block are fixedly connected to the outer wall of the round rod, a film roller is clamped on the outer wall of the round rod, a groove is provided on the outer wall of the film roller, a baffle is provided on the outer wall of the film roller via bolts, a slot is provided on the outer wall of the fixing plate, a detection module is fixedly connected to the inner wall of the bracket, a display screen is fixedly connected to the outer wall of the film roller, and a fixing mechanism is provided on the outer wall of the film roller.

[0007] Preferably, the fixed plate is fixedly connected to the top outer wall of the base, one end of the spiral spring is fixedly connected to the outer wall of the plug block, the other end of the spiral spring is fixedly connected to the inner wall of the fixed block, the plug block is clamped in the slot, and the film roller is in contact with the outer walls of the fixed plate and the cover plate.

[0008] Preferably, one end of the connecting spring is fixedly connected to the inner wall of the fixing tube, the other end of the connecting spring is fixedly connected to the outer wall of the round rod, the outer wall of the round rod is slidably connected to the inner wall of the fixing tube, and the round rod, the protrusion and the groove are snap-fitted.

[0009] Preferably, the fixing mechanism comprises a limit plate, the inner wall of the limit plate is elastically connected to a wedge block via a return spring, the outer wall of the wedge block is fixedly connected to a movable plate, the outer wall of the limit plate is hinged with a rotating plate, and the outer wall of the film roller is provided with a slot.

[0010] Preferably, the limiting plate is slidably connected to the outer wall of the film roller, and the wedge block is engaged with the slot.

[0011] Preferably, one end of the return spring is fixedly connected to the outer wall of the wedge block, the other end of the return spring is fixedly connected to the inner wall of the limit plate, and the rotating plate is in contact with the moving plate.

[0012] Preferably, the adjustment mechanism includes a handle, the inner wall of the handle is elastically connected to a short rod through a telescopic spring, the outer wall of the short rod is fixedly connected to a partition, the outer wall of the bracket is rotatably connected to a placement roller, the outer wall of the handle is hinged to a connecting rod through a hinge rod, the outer wall of the connecting rod is rotatably connected to a squeezing roller, and the outer wall of the bracket is provided with a limiting groove.

[0013] Preferably, the handle is slidably connected to the inner wall of the bracket, one end of the telescopic spring is fixedly connected to the outer wall of the short rod, the other end of the telescopic spring is fixedly connected to the inner wall of the handle, the short rod is slidably connected to the inner wall of the handle, and the handle is clamped in the limiting groove.

[0014] Preferably, one end of the hinged rod is hinged to the outer wall of the connecting rod, the other end of the hinged rod is hinged to the outer wall of the handle, and the connecting rod is hinged to the outer wall of the bracket.

[0015] The present application also proposes a method for detecting defects in a coiled film, comprising the following steps:

[0016] S1. Place the base on the ground or a workbench, move the insert block to make it rotate in the inner wall of the fixed block and disengage from the slot, release the cover plate, open the cover plate, move the push block on the outer wall of the round rod to move the round rod to the inner wall of the fixed tube, squeeze the connecting spring, and disengage the round rod from the convex block and the groove, and remove the film roller;

[0017] S2, insert the cylindrical coiled film on the film roller, move the shifting block, place the film roller on the two sets of fixed plates, make the grooves correspond to the positions of the round rods and the protrusions, loosen the shifting block, and the round rods, protrusions and grooves are clamped under the elastic force of the connecting spring, so that the film roller and the motor are fixed through the fixing tube and the round rod, and then close the cover plate, the inserting block is clamped with the slot under the elastic force of the scroll spring, and the cover plate and the film roller are fixed. At this time, the film roller can rotate between the cover plate and the fixed plate;

[0018] S3, move the cylindrical coiled film on the film roller so that one end of it contacts with the fixed plate on one side, press the moving plate to drive the wedge block to move synchronously, flip the rotating plate outward, and then directly move the limiting plate. The arc surface of the wedge block is squeezed by the inner wall of the slot and moves into the inner wall of the limiting plate, so that the limiting plate can contact with the other end of the cylindrical film. The reset spring drives the wedge block to pop up downward and engage with the slot to limit the limiting plate, and the cylindrical film is fixed on the film roller;

[0019] S4, pull the partition to release the limit of the handle, move the handle up and down, drive the hinged rod and the connecting rod to flip, the connecting rod drives the squeezing roller to move up and down, generate different pressures on the film, change the film tension, after the adjustment is completed, release the partition, the telescopic spring drives the short rod to pop out and engage with another set of limit grooves, fix the handle, fix the squeezing roller, and complete the film tension adjustment;

[0020] S5. Start the motor. The output shaft of the motor drives the fixed tube, the round rod and the film roller to rotate synchronously. The film is transported from the film roller to the placement roller. The film after tension adjustment remains stable and flat during the transportation process. The detection module photographs and detects the surface of the film. The detection image is transmitted to the display screen for the operator to observe and detect whether there are defects in the film.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention provides a film roller and a fixing plate and other structures to cooperate. When installing the cylindrical film, the cylindrical film can be inserted into the outer wall of the film roller, and the cover plate is opened to place the film roller on the fixing plate. The cover plate is closed to fix the film roller, and then the film roller and the motor can be fixed through the fixing tube and the round rod by clamping the round rod and the groove. When the motor is started, the film roller can be driven to rotate synchronously, and the film can be transported or rolled up, which is more convenient, thereby avoiding the need to disassemble and install the film roller by repeatedly turning the bolts, which is more convenient and quicker.

[0023] The present invention provides a limit plate and a wedge block and other structures to cooperate. When it is necessary to fix tubular films of different widths, the limit plate can be limited by the wedge block and the card slot. The limit plate and the fixing plate can fix the tubular film so that it will not deviate during the conveying and winding process. The adjustment method is relatively simple, thereby improving the stability of the film during conveying and ensuring that the detection module can obtain a relatively accurate picture.

[0024] The present invention cooperates with structures such as a handle and a squeezing roller, and by moving the handle up and down, the squeezing roller can be driven to move up and down. During the film conveying process, the position of the squeezing roller can be adjusted to change the pressure on the film, thereby changing the tension of the film to ensure that wrinkles will not appear during the film conveying process, and that the film will not shake due to vibration of the equipment, resulting in an inability to obtain a clearer picture. The tension can also be adjusted according to the different materials of the roll film, thereby improving the accuracy of film defect detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the base of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the film roller and the fixing plate after being decomposed;

[0028] Figure 4 For the present invention Figure 2 The enlarged structural diagram of part A in the middle;

[0029] Figure 5 For the present invention Figure 3 The enlarged structural diagram of part B in the middle;

[0030] Figure 6 It is a schematic diagram of the cross-sectional structure of the film roller and the limiting plate of the present invention;

[0031] Figure 7 It is a schematic diagram of the cross-sectional structure of the limiting plate of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the adjustment mechanism, display screen, and detection module of the present invention;

[0033] Fig. 9 It is a schematic diagram of the structure of the regulating mechanism of the present invention;

[0034] Fig.10 It is a schematic diagram of the handle cross section and the exploded structure of the bracket of the present invention.

[0035] In the figure: 1. base; 2. bracket; 3. placing mechanism; 301. fixing plate; 302. protrusion; 303. round rod; 304. film roller; 305. motor; 306. cover plate; 307. fixing block; 308. scroll spring; 309. shift block; 310. insert block; 311. baffle; 312. slot; 313. groove; 314. fixing tube; 315. connecting spring; 4. adjusting mechanism; 401. placing roller; 402. connecting rod; 403. squeezing roller; 404. limiting groove; 405. hinge rod; 406. handle; 407. telescopic spring; 408. short rod; 409. partition; 5. fixing mechanism; 501. limiting plate; 502. reset spring; 503. wedge block; 504. moving plate; 505. rotating plate; 6. display screen; 7. card slot; 8. detection module. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figures 1 to 5 As shown, the present invention provides a defect detection device for a coiled film, comprising a base 1, a bracket 2 is fixedly connected to the top outer wall of the base 1, an adjustment mechanism 4 is provided on the outer wall of the bracket 2, and a placement mechanism 3 is provided on the outer wall of the bracket 2; the placement mechanism 3 comprises a fixed plate 301, a cover plate 306 is hingedly connected to the top outer wall of the fixed plate 301, a fixed block 307 is fixedly connected to the outer wall of the cover plate 306, an insert block 310 is elastically connected to the inner wall of the fixed block 307 through a volute spring 308, a motor 305 is fixedly connected to the outer wall of the fixed plate 301, and the output shaft of the motor 305 is fixedly connected There is a fixed tube 314, the inner wall of the fixed tube 314 is elastically connected to the round rod 303 through a connecting spring 315, the outer wall of the round rod 303 is fixedly connected to the protrusion 302 and the shift block 309, the outer wall of the round rod 303 is clamped with a film roller 304, the outer wall of the film roller 304 is provided with a groove 313, the outer wall of the film roller 304 is provided with a baffle 311 through bolts, the outer wall of the fixed plate 301 is provided with a slot 312, the inner wall of the bracket 2 is fixedly connected to the detection module 8, the top outer wall of the bracket 2 is fixedly connected to the display screen 6, and the outer wall of the film roller 304 is provided with a fixing mechanism 5.

[0038] The above scheme is adopted: the base 1 can be placed on the ground or a workbench to perform the defect detection operation of the coiled film. The film rolled into a cylindrical shape can be fixed by the placement mechanism 3, and the bolts on the outer wall of the baffle 311 can be removed to make the baffle 311 disengage from the film roller 304, so that the cylindrical film can be inserted on the film roller 304; the placement mechanism 3 is provided with two groups, which are symmetrically distributed on both sides of the base 1. After the cylindrical film is fixed on one group of placement mechanisms 3, the pulled-out end is fixed on the other group of placement mechanisms 3, and the film roller 304 can be driven by the motor 305 to rotate to convey the film. The tension of the middle part can be adjusted through the adjustment mechanism 4 to adjust according to the softness and hardness of the coiled film of different materials, so that the film will not be wrinkled, thereby ensuring that the detection module 8 can obtain the film during the film conveying process. To obtain a clear and stable image, the detection module 8 and the display screen 6 are both existing technologies. The detection module 8 can shoot and detect the surface of the film, and can transmit the image to the display screen 6 for the operator to observe; the fixed plates 301 in the placement mechanism 3 are arranged in two symmetrical groups, and the motor 305 is fixed on the outer wall of one group of the fixed plates 301. Both groups of the fixed plates 301 are provided with a cover plate 306, which can be opened to facilitate the removal of the film roller 304, and the film roller 304 can be connected and fixed to the motor 305, so that when the motor 305 is started, it can drive the film roller 304 to rotate and transport the coiled film; through the fixing mechanism 5, cylindrical films of different widths can be fixed to prevent them from being offset during the rotation of the film roller 304, which affects the winding of the film after detection.

[0039] like Figure 6 to Figure 7 As shown, the fixed plate 301 is fixedly connected to the top outer wall of the base 1, one end of the spiral spring 308 is fixedly connected to the outer wall of the plug block 310, the other end of the spiral spring 308 is fixedly connected to the inner wall of the fixed block 307, the plug block 310 is clamped with the slot 312, and the film roller 304 is in contact with the outer wall of the fixed plate 301 and the cover plate 306; one end of the connecting spring 315 is fixedly connected to the inner wall of the fixed tube 314, the other end of the connecting spring 315 is fixedly connected to the outer wall of the round rod 303, the outer wall of the round rod 303 is slidably connected to the inner wall of the fixed tube 314, and the round rod 303, the protrusion 302 and the groove 313 are clamped.

[0040] Using the above solution: Figure 4As shown, the plug block 310 is L-shaped and is rotatably connected to the inner wall of the fixed block 307. When the cover plate 306 is closed and contacts the outer wall of the fixed plate 301, the plug block 310 is engaged with the slot 312 under the elastic force of the spiral spring 308, so that the cover plate 306 is fixed to keep it in a closed state, and the film roller 304 can be fixed so that it will not fall off, but at this time the film roller 304 can still rotate between the cover plate 306 and the fixed plate 301; when the film roller 304 needs to be removed, the plug block 310 can be moved to rotate in the inner wall of the fixed block 307 and disengage from the slot 312, and the cover plate 306 can be turned over by contacting the fixation of the cover plate 306, so that the film roller 304 can be removed; the fixed tube 314 runs through the outer wall of the fixed plate 301, and when the film roller 304 is connected to the motor 305, the round rod 314 can be moved The shift block 309 on the outer wall of 303 moves the round rod 303 to the inner wall of the fixed tube 314, squeezing the connecting spring 315. At this time, the film roller 304 can be placed on the two sets of fixed plates 301 so that the groove 313 corresponds to the position of the round rod 303 and the protrusion 302. Then, the shift block 309 is released. Under the elastic force of the connecting spring 315, the round rod 303 and the protrusion 302 are ejected at the same time and engaged with the groove 313. The film roller 304 and the motor 305 can be fixed through the fixed tube 314 and the round rod 303. When the motor 305 is started, its output shaft can drive the fixed tube 314, the round rod 303 and the film roller 304 to rotate synchronously, so as to convey or reel the coiled film. Therefore, the fixing method of the tubular film is relatively convenient and quick, and there is no need to disassemble and install by repeatedly turning bolts or other methods, which saves time and effort.

[0041] like Figure 6 to Figure 7 As shown, the fixing mechanism 5 includes a limit plate 501, the inner wall of the limit plate 501 is elastically connected with a wedge block 503 through a reset spring 502, the outer wall of the wedge block 503 is fixedly connected with a movable plate 504, the outer wall of the limit plate 501 is hinged with a rotating plate 505, and the outer wall of the film roller 304 is provided with a slot 7; the limit plate 501 is slidably connected to the outer wall of the film roller 304, and the wedge block 503 is engaged with the slot 7; one end of the reset spring 502 is fixedly connected to the outer wall of the wedge block 503, and the other end of the reset spring 502 is fixedly connected to the inner wall of the limit plate 501, and the rotating plate 505 is in contact with the movable plate 504.

[0042] The above scheme is adopted: the limit plate 501 can move laterally on the surface of the film roller 304. When the coiled film is placed on the film roller 304, one end of it can contact the fixed plate 301 on one side, and then the position of the limit plate 501 can be adjusted to make the limit plate 501 contact with the other end of the coiled film. The cylindrical film can be fixed by the limit plate 501 and the fixed plate 301 to maintain its stability during rotation, so that it will not shift during transportation and affect the detection or the winding state after detection; the card slot 7 is provided with multiple groups, so that the limit plate 501 can be moved to multiple positions for fixing, so that it can be adjusted according to the width of the cylindrical film to adapt to cylindrical films of different sizes.

[0043] like Figure 6 to Figure 7 As shown, the limit plate 501 is fixed to the outer wall of the film roller 304 through the wedge block 503, and in this state, the rotating plate 505 is in contact with the outer wall of the movable plate 504, as shown in FIG. Figure 6 and Figure 7 As shown, the outer wall of the movable plate 504 is provided with a groove, and the rotating plate 505 is inserted into the groove. At this time, the rotating plate 505 remains fixed, and the movable plate 504 and the wedge block 503 can be fixed synchronously. When the film roller 304 and the limiting plate 501 rotate, the wedge block 503 will not move to the inner wall of the limiting plate 501 due to the centrifugal force, and will not be out of contact with the card slot 7 to affect the fixing state of the cylindrical film; Figure 7 As shown, the bottom end of the movable plate 504 is at a certain distance from the limiting plate 501. When it is necessary to disengage the wedge block 503 from the card slot 7 and move the limiting plate 501, the movable plate 504 can be pressed downward to drive the wedge block 503 to move synchronously, and the return spring 502 is stretched by force. At this time, the movable plate 504 gradually disengages from the rotating plate 505, and the rotating plate 505 can be turned outward. At this time, the movable plate 504 can be moved upward to drive the wedge block 503 to move synchronously to squeeze the return spring 502, and the wedge block 503 moves to the inner wall of the limiting plate 501, so that it can be disengaged from the card slot 7, and the limiting of the limiting plate 501 is released. Move it; if the width of the cylindrical film is longer, the limit plate 501 can be moved and adjusted according to the above method, and when the width of the cylindrical film is shorter, the rotating plate 505 can be flipped outward to disengage from the movable plate 504, and then the limit plate 501 can be directly moved. The arc surface of the wedge block 503 is squeezed by the inner wall of the slot 7 and moved to the inner wall of the limit plate 501, and the position of the limit plate 501 can be directly adjusted; when the limit plate 501 is adjusted to fit the outer wall of the cylindrical film, the reset spring 502 drives the wedge block 503 to pop up downward, which can be engaged with the slot 7, to limit the limit plate 501 and fix the cylindrical film.

[0044] like Figures 8 to 10As shown, the adjustment mechanism 4 includes a handle 406, the inner wall of the handle 406 is elastically connected to a short rod 408 through a telescopic spring 407, the outer wall of the short rod 408 is fixedly connected to a partition 409, the outer wall of the bracket 2 is rotatably connected to a placement roller 401, the outer wall of the handle 406 is hinged to a connecting rod 402 through a hinge rod 405, the outer wall of the connecting rod 402 is rotatably connected to an extrusion roller 403, and a limiting groove 404 is provided on the outer wall of the bracket 2.

[0045] The above scheme is adopted: during the conveying process of the cylindrical film, it is conveyed to the placement roller 401 through the film roller 304, and squeezing rollers 403 are arranged on both sides of the placement roller 401. The position of the squeezing roller 403 can be adjusted by the adjustment mechanism 4. The squeezing roller 403 can press down on the film from the top to increase its tension. This can not only avoid the vibration of the equipment operation causing the film to shake and affect the detection, but also avoid wrinkles on the surface of the film, causing blurred detection images and other problems. Films of different materials require different tensions to ensure their stability and flatness. By moving the handle 406 up and down, the height of the squeezing roller 403 can be adjusted, so that different tensions can be applied to the film, which is more flexible.

[0046] like Figures 8 to 10 As shown, the handle 406 is slidably connected to the inner wall of the bracket 2, one end of the telescopic spring 407 is fixedly connected to the outer wall of the short rod 408, the other end of the telescopic spring 407 is fixedly connected to the inner wall of the handle 406, the short rod 408 is slidably connected to the inner wall of the handle 406, and the handle 406 is clamped with the limiting groove 404; one end of the articulated rod 405 is hinged to the outer wall of the connecting rod 402, the other end of the articulated rod 405 is hinged to the outer wall of the handle 406, and the connecting rod 402 is hinged to the outer wall of the bracket 2.

[0047] The above scheme is adopted: in the case of no external force, the elastic force of the telescopic spring 407 drives the short rod 408 to maintain the state of being engaged with the limit groove 404, fixes the position of the handle 406, and fixes the positions of the hinge rod 405, the connecting rod 402 and the squeezing roller 403; the limit groove 404 is provided with multiple groups, when the partition 409 is pulled, the short rod 408 can be driven to move synchronously and disengage from the limit groove 404, release the limit of the handle 406 and move it; during the movement of the handle 406, the hinge rod 405 is driven to flip, The connecting rod 402 is flipped along the hinge between it and the bracket 2, so that the other end of the connecting rod 402 can drive the squeezing roller 403 to move up and down, thereby generating different amounts of pressure on the film to change its tension; after the adjustment is completed and the film is under a suitable tension state, the partition 409 can be loosened, and the telescopic spring 407 drives the short rod 408 to pop out and engage with another set of limit grooves 404, and the handle 406 is fixed to fix the squeezing roller 403, so that the adjustment of the film tension can be completed, ensuring its flatness and stability during the conveying and detection process.

[0048] The present application also proposes a method for detecting defects in a coiled film, comprising the following steps:

[0049] S1. Place the base 1 on the ground or a workbench, move the insert block 310 to rotate in the inner wall of the fixed block 307 and disengage from the slot 312, release the cover plate 306, open the cover plate 306, move the push block 309 on the outer wall of the round rod 303 to move the round rod 303 to the inner wall of the fixed tube 314, squeeze the connecting spring 315, disengage the round rod 303 from the convex block 302 and the groove 313, and remove the film roller 304;

[0050] S2, insert the cylindrical coiled film on the film roller 304, move the shifting block 309, place the film roller 304 on the two sets of fixed plates 301, make the groove 313 correspond to the position of the round rod 303 and the protrusion 302, loosen the shifting block 309, and the round rod 303, the protrusion 302 and the groove 313 are engaged under the elastic force of the connecting spring 315, so that the film roller 304 and the motor 305 are fixed through the fixing tube 314 and the round rod 303, and then close the cover plate 306, the inserting block 310 is engaged with the slot 312 under the elastic force of the spiral spring 308, and the cover plate 306 and the film roller 304 are fixed. At this time, the film roller 304 can rotate between the cover plate 306 and the fixed plate 301;

[0051] S3, move the cylindrical coiled film on the film roller 304 so that one end of it contacts the fixed plate 301 on one side, press the moving plate 504, drive the wedge block 503 to move synchronously, flip the rotating plate 505 outward, and then directly move the limiting plate 501. The arc surface of the wedge block 503 is squeezed by the inner wall of the slot 7 and moves into the inner wall of the limiting plate 501, so that the limiting plate 501 can contact the other end of the cylindrical film. The reset spring 502 drives the wedge block 503 to pop up downward and engage with the slot 7 to limit the limiting plate 501 and fix the cylindrical film on the film roller 304;

[0052] S4, pull the partition 409 to release the limit of the handle 406, move the handle 406 up and down, drive the hinge rod 405 and the connecting rod 402 to flip, the connecting rod 402 drives the squeezing roller 403 to move up and down, generate different pressures on the film, change the film tension, after the adjustment is completed, release the partition 409, the telescopic spring 407 drives the short rod 408 to pop out and engage with another set of limit grooves 404, fix the handle 406, fix the squeezing roller 403, and complete the film tension adjustment;

[0053] S5. Start the motor 305. The output shaft of the motor 305 drives the fixed tube 314, the round rod 303 and the film roller 304 to rotate synchronously. The film is conveyed from the film roller 304 to the placement roller 401. The film after tension adjustment remains stable and flat during the conveying process. The detection module 8 photographs and detects the surface of the film. The detection image is transmitted to the display screen 6 for the operator to observe and detect whether there are defects in the film.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting defects in a web or film, comprising a base (1), characterized in that: The top outer wall of the base (1) is fixedly connected to a bracket (2), the outer wall of the bracket (2) is provided with an adjustment mechanism (4), and the outer wall of the bracket (2) is provided with a placement mechanism (3); The placement mechanism (3) comprises a fixing plate (301), the top outer wall of the fixing plate (301) is hingedly connected to a cover plate (306), the outer wall of the cover plate (306) is fixedly connected to a fixing block (307), the inner wall of the fixing block (307) is elastically connected to an insert block (310) via a spiral spring (308), the outer wall of the fixing plate (301) is fixedly connected to a motor (305), the output shaft of the motor (305) is fixedly connected to a fixing tube (314), the inner wall of the fixing tube (314) is elastically connected to a round rod (303) via a connecting spring (315), and the The outer wall of the round rod (303) is fixedly connected with a protrusion (302) and a shifting block (309); the outer wall of the round rod (303) is clamped with a film roller (304); the outer wall of the film roller (304) is provided with a groove (313); the outer wall of the film roller (304) is provided with a baffle (311) via bolts; the outer wall of the fixing plate (301) is provided with a slot (312); the inner wall of the bracket (2) is fixedly connected with a detection module (8); the top outer wall of the bracket (2) is fixedly connected with a display screen (6); and the outer wall of the film roller (304) is provided with a fixing mechanism (5).

2. The web film defect detection device according to claim 1, characterized in that: The fixed plate (301) is fixedly connected to the top outer wall of the base (1), one end of the spiral spring (308) is fixedly connected to the outer wall of the plug block (310), the other end of the spiral spring (308) is fixedly connected to the inner wall of the fixed block (307), the plug block (310) is snap-fitted to the slot (312), and the film roller (304) is in contact with the outer walls of the fixed plate (301) and the cover plate (306).

3. The web film defect detection device according to claim 1, characterized in that: One end of the connecting spring (315) is fixedly connected to the inner wall of the fixing tube (314), and the other end of the connecting spring (315) is fixedly connected to the outer wall of the round rod (303). The outer wall of the round rod (303) is slidably connected to the inner wall of the fixing tube (314), and the round rod (303), the protrusion (302) and the groove (313) are snap-fitted.

4. The web film defect detection device according to claim 1, characterized in that: The fixing mechanism (5) comprises a limiting plate (501), the inner wall of the limiting plate (501) is elastically connected to a wedge block (503) via a return spring (502), the outer wall of the wedge block (503) is fixedly connected to a movable plate (504), the outer wall of the limiting plate (501) is hinged with a rotating plate (505), and the outer wall of the film roller (304) is provided with a card slot (7).

5. The web film defect detection device according to claim 4, characterized in that: The limiting plate (501) is slidably connected to the outer wall of the film roller (304), and the wedge block (503) is engaged with the engagement groove (7).

6. The web film defect detection device according to claim 4, characterized in that: One end of the return spring (502) is fixedly connected to the outer wall of the wedge block (503), the other end of the return spring (502) is fixedly connected to the inner wall of the limit plate (501), and the rotating plate (505) is in contact with the moving plate (504).

7. The web film defect detection device according to claim 1, characterized in that: The adjustment mechanism (4) comprises a handle (406), the inner wall of the handle (406) is elastically connected to a short rod (408) via a telescopic spring (407), the outer wall of the short rod (408) is fixedly connected to a partition (409), the outer wall of the bracket (2) is rotatably connected to a placement roller (401), the outer wall of the handle (406) is hinged to a connecting rod (402) via a hinge rod (405), the outer wall of the connecting rod (402) is rotatably connected to a squeezing roller (403), and a limiting groove (404) is provided on the outer wall of the bracket (2).

8. The web film defect detection device according to claim 7, characterized in that: The handle (406) is slidably connected to the inner wall of the bracket (2), one end of the telescopic spring (407) is fixedly connected to the outer wall of the short rod (408), the other end of the telescopic spring (407) is fixedly connected to the inner wall of the handle (406), the short rod (408) is slidably connected to the inner wall of the handle (406), and the handle (406) is snap-fitted to the limiting groove (404).

9. The web film defect detection device according to claim 7, characterized in that: One end of the hinged rod (405) is hinged to the outer wall of the connecting rod (402), the other end of the hinged rod (405) is hinged to the outer wall of the handle (406), and the connecting rod (402) is hinged to the outer wall of the bracket (2).

10. A method for detecting defects in a web or film, applied to a device for detecting defects in a web or film as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Place the base (1) on the ground or on a workbench, move the insert block (310) so that it rotates in the inner wall of the fixed block (307) and is out of contact with the slot (312), release the cover plate (306), open the cover plate (306), move the push block (309) on the outer wall of the round rod (303) so that the round rod (303) moves to the inner wall of the fixed tube (314), squeeze the connecting spring (315), and the round rod (303) is out of contact with the protrusion (302) and the groove (313), and remove the film roller (304); S2, insert the cylindrical coiled film on the film roller (304), move the shifting block (309), place the film roller (304) on the two sets of fixed plates (301), make the groove (313) correspond to the position of the round rod (303) and the protrusion (302), release the shifting block (309), and under the elastic force of the connecting spring (315), the round rod (303) and the protrusion (302) are clamped with the groove (313), so that the film roller (304) and the motor (305) are fixed through the fixing tube (314) and the round rod (303), and then close the cover plate (306), and the inserting block (310) is clamped with the slot (312) under the elastic force of the spiral spring (308), so as to fix the cover plate (306) and the film roller (304), and at this time, the film roller (304) can rotate between the cover plate (306) and the fixed plate (301); S3, move the cylindrical coiled film on the film roller (304) so ​​that one end of it contacts the fixed plate (301) on one side, press the moving plate (504), drive the wedge block (503) to move synchronously, turn the rotating plate (505) outward, and then directly move the limiting plate (501). The arc surface of the wedge block (503) is squeezed by the inner wall of the slot (7) and moves into the inner wall of the limiting plate (501), so that the limiting plate (501) can contact the other end of the cylindrical film. The reset spring (502) drives the wedge block (503) to pop out downward and engage with the slot (7), thereby limiting the limiting plate (501) and fixing the cylindrical film on the film roller (304); S4, pull the partition (409) to release the limit of the handle (406), move the handle (406) up and down, drive the hinged rod (405) and the connecting rod (402) to flip, the connecting rod (402) drives the squeezing roller (403) to move up and down, generate different pressures on the film, change the film tension, after the adjustment is completed, release the partition (409), the telescopic spring (407) drives the short rod (408) to pop out and engage with another set of limit grooves (404), fix the handle (406), fix the squeezing roller (403), and complete the film tension adjustment; S5, start the motor (305), the output shaft of the motor (305) drives the fixed tube (314), the round rod (303) and the film roller (304) to rotate synchronously, the film is conveyed from the film roller (304) to the placement roller (401), and the film after tension adjustment remains stable and flat during the conveying process. The detection module (8) takes a picture of the film surface and detects it, and the detection image is transmitted to the display screen (6) for observation by the operator to detect whether there are defects in the film.

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