Appearance defect detection device for PVC-PE composite film

Abstract

The invention relates to the technical field of new material detection, in particular to an appearance defect detection device for a PVC-PE (Poly Vinyl Chloride-Polyethylene) composite film. Comprising a movable base, a lifting mechanism is arranged on the movable base, a lifting table is arranged at the top end of the lifting mechanism, and a detection box for detecting appearance flaws of the PVC-PE composite film is mounted on the lifting table; an adjustable illumination mechanism for performing multi-angle and distance illumination on the PVC-PE composite film is arranged on the inner wall of the detection box; a closed dust removal chain is formed by a dust collection part (a soft hair electric cleaning roller and negative pressure dust guide) and a dust collection box, dust collection operation is synchronously carried out on the upper surface and the lower surface of the PVC-PE composite film, the dust attached to the PVC-PE composite film is prevented from influencing detection data, meanwhile, the dust is collected, secondary pollution to the PVC-PE composite film is effectively avoided, and the service life of the PVC-PE composite film is prolonged. Therefore, the accuracy of the detection data is further improved, and pollution to the external environment is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of new material detection, and particularly relates to a PVC-PE composite film appearance defect detection device. BACKGROUND

[0002] In the PVC-PE composite film preparation and production process, surface defects such as smearing, scratching, concave-convex deformation, crystal points or static points are prone to occur, which affects the quality of the product, so it is necessary to use a detection device to detect the surface defects of the PVC-PE composite film. When the PVC-PE composite film is detected, the dust and impurities attached to the PVC-PE composite film can easily affect the detection data, so it is necessary to clean the dust and impurities on the PVC-PE composite film to improve the accuracy of the defect detection data.

[0003] After retrieval, an authorized patent document with publication number CN217846103U and publication date of November 18, 2022 discloses a PVC-PE composite film defect detection device, which includes a bottom plate, a mounting rod is installed on one side outer wall of the bottom plate, a gas cylinder is arranged on the top outer wall of the mounting rod, a detection probe is connected to one end of the gas cylinder extension rod, a display screen is arranged on one side outer wall of the adjusting rod, the display screen is electrically connected with the detection probe, an installation groove is arranged on the top outer wall of the bottom plate, an adjusting rod is connected to the inner wall of the installation groove through a bearing, a plurality of movable pads are symmetrically arranged on the outer wall of the adjusting rod at equal distances, a lamp bead is arranged on the top outer wall of each movable pad, a first knob is connected to one end of the adjusting rod, and a sliding groove is arranged on one side outer wall of the mounting rod close to the detection probe. The PVC-PE composite film defect detection device disclosed in the application has the effects of strong light supplementing pertinence, high detection accuracy, stable operation process and effective elimination of detection interference.

[0004] However, the device still has the following defects: although the device has the technical effects of strong light supplementing pertinence and high detection accuracy, in actual use, the device rotates and hits the contact pad through the two adaptive blocks on the first winding roller, the contact pad is extruded and blows air from the air hole to the PVC-PE composite film body on the surface of the winding roller, and the dust and impurities on the outer surface of the PVC-PE composite film body are blown away. After the dust and impurities are blown away, the floating dust is still likely to fall on the surface of the PVC-PE composite film, the dust removal effect is poor, and the subsequent detection accuracy is affected. Moreover, the dust removal method for cleaning the dust on the PVC-PE composite film is easy to cause environmental pollution, which is not conducive to sustainable promotion and use. SUMMARY

[0005] In response to the above problems, the present invention provides a device for detecting appearance defects of a PVC-PE composite film, comprising a movable base, a lifting mechanism provided on the movable base, a lifting platform provided on the top of the lifting mechanism, and a detection box for detecting appearance defects of the PVC-PE composite film installed on the lifting platform; A feed trough is provided on one side wall of the detection box, and a feed processing assembly is provided on one end of the side wall of the detection box close to the feed trough; The top of the inner wall of the detection box is provided with a detection part, and the inner wall of the detection box is provided with an adjustable lighting mechanism for irradiating the PVC-PE composite film with light at multiple angles and distances; The feed processing assembly includes two sets of transmission boxes, and a feed tensioning roller for limiting and tensioning the PVC-PE composite film is rotatably connected between the two sets of transmission boxes; Two groups of dust suction parts for cleaning dust on the upper and lower surfaces of the PVC-PE composite film are arranged between the two groups of transmission boxes. The dust suction parts include a first dust guide frame and a second dust guide frame. A telescopic dust guide cover is arranged between the first dust guide frame and the second dust guide frame. A soft-bristle electric cleaning roller is installed in the first dust guide frame.

[0006] Furthermore, the two groups of transmission boxes are installed on the side walls of the detection box, and the feed tensioning roller is arranged above the feed trough.

[0007] Furthermore, a fixed shaft is provided in the transmission box, and two groups of adjusting rings are rotatably connected to the fixed shaft, and the two groups of adjusting rings are fixedly connected with a linkage shaft, and one end of the two groups of linkage shafts are respectively connected to the center of one side of a group of first dust guide frames for damping rotation, and several groups of racks are provided on the two groups of adjusting rings, and two groups of adjusting shafts are rotatably connected in the transmission box, and the two groups of adjusting shafts are each provided with an outer gear ring, and the two groups of outer gear rings are respectively meshed with several groups of racks on the corresponding group of adjusting rings.

[0008] Furthermore, two groups of self-locking knobs are provided on one group of the transmission boxes, and one end of each of the two groups of adjustment shafts passes through the outer wall of the transmission box and is fixedly connected to the corresponding group of self-locking knobs.

[0009] Furthermore, the detection box is also provided with a discharge trough, which is symmetrical with the feed trough. Two groups of raised brackets are provided on the side wall of the detection box and at one end close to the discharge trough. A discharge tensioning roller is rotatably connected between the two groups of raised brackets, and the height of the discharge tensioning roller is the same as that of the feed tensioning roller.

[0010] Further, the lifting platform is further provided with a dust collecting mechanism, the dust collecting mechanism is arranged on one side of the detection box, two groups of dust guide boxes are arranged in the detection box, the two groups of dust guide boxes are symmetrically arranged, the two groups of dust guide boxes are arranged at one end close to the feeding treatment assembly, and the two groups of dust guide boxes are communicated with the two groups of dust suction parts.

[0011] Further, the dust collecting mechanism comprises a dust collecting box, a vacuum pump is installed at the top of the outer wall of the dust collecting box, a dust cover is arranged at the top of the inner wall of the dust collecting box, the air inlet end of the vacuum pump extends to the dust cover through the inner wall of the dust collecting box, two groups of dust guide pipes are arranged on the dust collecting box, one end of each group of the dust guide pipes extends into the two groups of dust guide boxes, a box door is arranged on the dust collecting box, a perspective window is arranged on the box door, and transparent glass is embeddedly installed on the perspective window.

[0012] Further, the adjustable light illumination mechanism comprises a motor, two groups of rotating discs and a lamp arranging plate, the output end of the motor is in transmission connection with the center of one group of rotating discs, and the two groups of rotating discs are rotationally connected to the inner wall of the detection box.

[0013] Further, mounting blocks are arranged on the two groups of rotating discs, electric push rods are installed on the two groups of mounting blocks, linkage blocks are fixedly connected to the two ends of the lamp arranging plate, the output ends of the two groups of electric push rods are in transmission connection with the two groups of linkage blocks, and a plurality of groups of LED light sources are installed on the lamp arranging plate.

[0014] Further, the detection part comprises a mounting box and a plurality of groups of detection cameras, an image processor and a controller are arranged in the mounting box, the image processor and the controller are electrically connected with the plurality of groups of detection cameras, and the image processor, the controller and the plurality of groups of detection cameras are electrically connected with an external power supply.

[0015] The beneficial effects of the present application are as follows: 1. The feeding tensioning roller and the discharging tensioning roller are used for tensioning the PVC-PE composite film, the adjustable light illumination mechanism is used for cooperating with the detection part to detect the appearance defects of the PVC-PE composite film, the dust suction part (soft hair electric cleaning roller + negative pressure dust guide) and the dust collecting box form a closed dust removal chain, dust suction operations are simultaneously performed on the upper and lower surfaces of the PVC-PE composite film, the influence of dust attached to the PVC-PE composite film on the detection data is avoided, the dust is collected, secondary pollution of the PVC-PE composite film is avoided, the accuracy of the detection data is further improved, and pollution to the external environment is avoided.

[0016] 2. By rotating the self-locking knob, the outer gear ring drives the adjusting ring to rotate, so that the linkage shaft drives the first dust guide frame to rotate synchronously, so that it drives the soft-bristle electric cleaning roller to rotate to a position that fits the surface of the PVC-PE composite film, and by rotating the first dust guide frame, its inclination angle is the same as the inclination angle of the PVC-PE composite film to improve the dust collection effect. After completing the angle adjustment of the two sets of first dust guide frames, self-locking is performed through the self-locking knob to avoid changes in the angles of the two sets of first dust guide frames during the detection process. By adjusting the position and angle of the two sets of first dust guide frames, when the inclination angle of the PVC-PE composite film changes, the two sets of soft-bristle electric cleaning rollers can be respectively attached to the upper and lower surfaces of the PVC-PE composite film, thereby meeting the cleaning needs of PVC-PE composite films with different inclination angles and improving the cleaning effect.

[0017] 3. Two sets of electric push rods are used to drive the light bar up and down to adjust the distance between the LED light source and the PVC-PE composite film. Two sets of turntables are used to drive the two sets of electric push rods to rotate, so that the light bar drives the LED light source to rotate synchronously to the preset angle value. The LED light source can adaptively adjust the lighting distance and lighting angle according to the defect detection requirements of PVC-PE composite films of different specifications. The lighting angle and distance are dynamically optimized according to the characteristics of the PVC-PE composite film, so that the device can meet the different lighting requirements of defect detection of PVC-PE composite films of different specifications.

[0018] 4. The inspection box is driven up and down by the lifting mechanism, and the height of the feed tensioning roller and the discharge tensioning roller changes synchronously to achieve tension adjustment of PVC-PE composite films of different heights. The PVC-PE composite film is tensioned by the feed tensioning roller and the discharge tensioning roller to avoid wrinkles in the PVC-PE composite film. During the adjustment process, the relative height of the PVC-PE composite film in the inspection box and the inspection part remains unchanged. The lifting mechanism, tensioning roller (feed / discharge) and inspection box height are linked to achieve automatic adaptation of the PVC-PE composite film transmission path. Therefore, when switching different PVC-PE composite film production lines and performing defect detection on PVC-PE composite films wound at different heights, there is no need to re-adjust the height of the inspection part, which improves the universality of the detection device while reducing the workload of technicians. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1Fig. 1 shows a schematic diagram of the main structure according to an embodiment of the present application; Figure 2 Fig. 2 shows a schematic diagram of the main structure from another perspective according to an embodiment of the present application; Figure 3 Fig. 3 shows a perspective view of the internal structure of the detection box according to an embodiment of the present application; Figure 4 Fig. 4 shows a schematic diagram of the internal partial structure of the detection box according to an embodiment of the present application; Figure 5 Fig. 5 shows a schematic diagram of the adjustable illumination mechanism structure according to an embodiment of the present application; Figure 6 Fig. 6 shows a schematic diagram of the internal structure of the dust collection box according to an embodiment of the present application; Figure 7 Fig. 7 shows a schematic diagram of the feed processing assembly structure according to an embodiment of the present application; Figure 8 Fig. 8 shows a perspective view of the internal structure of the transmission box according to an embodiment of the present application; Figure 9 Fig. 9 shows a schematic diagram of the internal structure of the transmission box from another perspective according to an embodiment of the present application.

[0021] In the figure: 100, mobile base; 200, lifting mechanism; 300, lifting platform; 400, detection box; 410, feed slot; 420, discharge slot; 430, protruding support; 440, discharge tensioning roller; 500, feed processing assembly; 510, transmission box; 511, self-locking knob; 512, fixed shaft; 513, adjusting ring; 514, rack; 515, linkage shaft; 516, adjusting shaft; 517, outer tooth ring; 520, feed tensioning roller; 530, dust collection part; 531, first dust guide frame; 532, second dust guide frame; 533, telescopic dust guide cover; 534, soft hair electric cleaning roller; 600, dust collection mechanism; 610, dust collection box; 620, vacuum pump; 630, dustproof cover; 640, box door; 650, perspective window; 660, dust guide pipe; 700, dust guide box; 800, detection part; 810, mounting box; 820, detection camera; 900, adjustable illumination mechanism; 910, motor; 920, rotating disc; 930, light panel; 940, rotating shaft; 950, mounting block; 960, electric push rod; 970, linkage block; 980, LED light source. DETAILED DESCRIPTION

[0022] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0023] The embodiment of the present application provides an appearance defect detection device for PVC-PE composite film, which comprises a mobile base 100; for example, as shown in the figure. Figures 1-4

[0024] The mobile base 100 is provided with universal wheels at the bottom of four corners, the mobile base 100 is provided with a lifting mechanism 200, the top of the lifting mechanism 200 is provided with a lifting platform 300, the lifting platform 300 is installed with a detection box 400, one side wall of the detection box 400 is provided with a feeding slot 410, and one end of the side wall of the detection box 400 close to the feeding slot 410 is provided with a feeding treatment assembly 500; The detection box 400 is also provided with a discharging slot 420, the discharging slot 420 is symmetrically arranged with the feeding slot 410, and two groups of protruding supports 430 are arranged at one end of the side wall of the detection box 400 close to the discharging slot 420; the discharging tension roller 440 is rotatably connected between the two groups of protruding supports 430; The lifting platform 300 is also provided with a dust collecting mechanism 600, the dust collecting mechanism 600 is arranged on one side of the detection box 400, the inside of the detection box 400 is provided with two groups of dust guide boxes 700, the two groups of dust guide boxes 700 are symmetrically arranged, and the two groups of dust guide boxes 700 are arranged at one end close to the feeding treatment assembly 500; The inner wall of the detection box 400 is provided with a detection part 800, the detection part 800 comprises a mounting box 810 and a plurality of detection cameras 820, the mounting box 810 is provided with an image processor and a controller, the image processor and the controller are electrically connected with the plurality of detection cameras 820, the image processor, the controller and the plurality of detection cameras 820 are electrically connected with an external power supply, and the inner wall of the detection box 400 is provided with an adjustable illumination mechanism 900; ​Specifically, by pushing the mobile base 100 to the production line of the PVC-PE composite film that needs to be detected, the produced PVC-PE composite film is inserted into the detection box 400 through the feeding slot 410 and then is taken out through the discharging slot 420, so that the surface of the PVC-PE composite film is limited by the bottom end of the discharging tension roller 440, and then one end of the PVC-PE composite film is fixed on the winding roller for winding. The detection box 400 is driven by the lifting mechanism 200 to move up and down, so that the discharging tension roller 440 moves up and down synchronously, thereby meeting the tensioning operation of the PVC-PE composite film wound at different heights, and avoiding the wrinkles of the PVC-PE composite film during the detection process. Further, the dust and impurities attached to the surface of the PVC-PE composite film are cleaned and collected by the feeding treatment assembly 500, which effectively improves the accuracy of the PVC-PE composite film detection and avoids secondary pollution to the PVC-PE composite film.

[0025] Further, the PVC-PE composite film is lighted by the adjustable light illumination mechanism 900, the appearance image of the PVC-PE composite film is collected by the detection part 800, and the collected image is transmitted to the image processor in real time for image preprocessing and defect recognition operation, and then the data is transmitted to the control panel for marking and data analysis by the technician.

[0026] Exemplarily, as shown in Figure 5 .

[0027] The adjustable light illumination mechanism 900 includes a motor 910, two groups of rotating discs 920 and a row of light plates 930. The output end of the motor 910 is drivingly connected with the center of one group of rotating discs 920. The two groups of rotating discs 920 are both rotationally connected with the inner wall of the detection box 400. The two groups of rotating discs 920 are both provided with mounting blocks 950. The two groups of mounting blocks 950 are both provided with electric push rods 960. The two ends of the row of light plates 930 are both fixedly connected with linkage blocks 970. The two groups of linkage blocks 970 are respectively drivingly connected with the output ends of the two groups of electric push rods 960. The row of light plates 930 is provided with a plurality of groups of LED light sources 980. Specifically, the distance between the LED light source 980 and the PVC-PE composite film is adjusted by driving the light panel 930 to move up and down through the two groups of electric push rods 960, and the light panel 930 drives the LED light source 980 to rotate to a preset angle value by driving the two groups of electric push rods 960 to rotate through the two groups of rotating discs 920, so that the LED light source 980 can adaptively adjust the illumination distance and angle according to the defect detection requirements of PVC-PE composite films of different specifications, so that the device can meet different illumination requirements of defect detection of PVC-PE composite films of different specifications, and the detection part 800 and the adjustable illumination mechanism 900 are arranged in the detection box 400, and the illumination and defect detection are carried out in the detection box 400, which can effectively avoid the influence of external environmental light on the defect detection data, thereby effectively improving the accuracy of the detection data and avoiding the direct eye of the LED light source 980 to the operator, thereby causing eye damage.

[0028] As shown in Figure 6 .

[0029] The dust collecting mechanism 600 comprises a dust collecting box 610, a vacuum pump 620 is installed at the top of the outer wall of the dust collecting box 610, a dust cover 630 is arranged at the top of the inner wall of the dust collecting box 610, the air inlet end of the vacuum pump 620 extends through the inner wall of the dust collecting box 610 and into the dust cover 630, two groups of dust guide pipes 660 are arranged on the dust collecting box 610, the other ends of the two groups of dust guide pipes 660 extend into two groups of dust collecting boxes 700 respectively, a box door 640 is arranged on the dust collecting box 610, a perspective window 650 is arranged on the box door 640, and a transparent glass is embeddedly installed on the perspective window 650; Specifically, the vacuum pump 620 forms a negative pressure in the dust collecting box 610, so that the dust and impurities in the two groups of dust collecting boxes 700 can enter the dust collecting box 610 through the two groups of dust guide pipes 660 for collection, the dust cover 630 protects the air inlet end of the vacuum pump 620, avoiding dust from blocking the air inlet end of the vacuum pump 620, and the dust amount in the dust collecting box 610 can be monitored through the perspective window 650, so that the dust in the dust collecting box 610 and the dust cover 630 can be cleaned regularly.

[0030] As shown in Figures 7-9 .

[0031] The feeding treatment assembly 500 comprises two groups of transmission boxes 510, the two groups of transmission boxes 510 are installed on the side walls of the detection box 400, a feeding tension roller 520 is rotatably connected between the two groups of transmission boxes 510, the feeding tension roller 520 is arranged above the feeding groove 410, and the feeding tension roller 520 has the same height as the discharging tension roller 440; Specifically, the PVC-PE composite film is tensioned by the feeding tension roller 520 and the discharging tension roller 440 to avoid wrinkles, and the height of the detection box 400 is adjusted while the height of the feeding tension roller 520 and the discharging tension roller 440 changes synchronously, so that the tension of the PVC-PE composite film of different heights can be adjusted, and the relative height of the PVC-PE composite film in the detection box 400 and the detection part 800 remains unchanged during the adjustment process, so that when different PVC-PE composite film production lines are switched, the height of the detection part 800 does not need to be adjusted again when the PVC-PE composite film of different heights is wound and detected, which improves the universality of the detection device and reduces the workload of the technicians.

[0032] A set of transmission boxes 510 are provided with two sets of self-locking knobs 511, and two sets of dust collection parts 530 are arranged between the two sets of transmission boxes 510. The dust collection part 530 includes a first dust guide frame 531 and a second dust guide frame 532, and a telescopic dust cover 533 is arranged between the first dust guide frame 531 and the second dust guide frame 532. A soft hair electric cleaning roller 534 is installed in the first dust guide frame 531, and the second dust guide frame 532 is connected to the inside of a set of dust guide boxes 700. Specifically, the vacuum pump 620 forms a negative pressure in the dust collection box 610, so that the inside of the dust guide box 700 connected thereto forms a negative pressure, and the surface of the first dust guide frame 531 forms a negative pressure. By sticking the soft hair electric cleaning roller 534 to the surface of the PVC-PE composite film and continuing to rotate and clean, the dust and impurities attached to the surface of the PVC-PE composite film are sucked into the telescopic dust cover 533 by the first dust guide frame 531, and finally into the dust collection box 610 for collection. By simultaneously performing dust collection on the upper and lower surfaces of the PVC-PE composite film, the dust attached to the PVC-PE composite film is prevented from affecting the detection data, and the dust is collected to effectively prevent secondary pollution of the PVC-PE composite film, thereby further improving the accuracy of the detection data and preventing pollution of the external environment.

[0033] The transmission box 510 is provided with a fixed shaft 512, the fixed shaft 512 is rotatably connected with two groups of adjusting rings 513, the two groups of adjusting rings 513 are fixedly connected with linkage shafts 515, one end of the two groups of linkage shafts 515 is rotatably connected with the center of one side of a group of first dust guide frames 531, a plurality of groups of racks 514 are arranged on the two groups of adjusting rings 513, the transmission box 510 is rotatably connected with two groups of adjusting shafts 516, the two groups of adjusting shafts 516 are sleeved with outer tooth rings 517, the two groups of outer tooth rings 517 are rotatably connected with a plurality of groups of racks 514 on the corresponding group of adjusting rings 513, and one end of the two groups of adjusting shafts 516 is rotatably connected with the corresponding group of self-locking knobs 511 through the outer wall of the transmission box 510. Specifically, by rotating the self-locking knob 511, the outer tooth ring 517 drives the adjusting ring 513 to rotate, so that the linkage shaft 515 drives the first dust guide frame 531 to rotate synchronously, so that the soft hair electric cleaning roller 534 is driven to rotate to the position of being attached to the surface of the PVC-PE composite film, and the first dust guide frame 531 is driven to rotate to the position of being attached to the surface of the PVC-PE composite film by rotating the first dust guide frame 531, so that the inclination angle of the first dust guide frame 531 is the same as the inclination angle of the PVC-PE composite film, so that the dust absorption effect is improved, and after the angle adjustment of the two groups of first dust guide frames 531 is completed, the self-locking knob 511 is used for self-locking, so that the angle of the two groups of first dust guide frames 531 does not change during detection, and through the position and angle adjustment of the two groups of first dust guide frames 531, when the inclination angle of the PVC-PE composite film changes, the two groups of soft hair electric cleaning rollers 534 can be attached to the upper and lower surfaces of the PVC-PE composite film respectively, so that the cleaning demand of the PVC-PE composite film with different inclination angles is met, and the cleaning effect is improved.

[0034] The working principle of the appearance defect detection device for the PVC-PE composite film is as follows: By pushing the mobile base 100 to the production line of the PVC-PE composite film to be detected for defects, the end of the PVC-PE composite film produced is inserted into the detection box 400 through the feeding slot 410 and then is taken out through the discharging slot 420, so that the surface of the PVC-PE composite film is attached to the bottom end of the feeding tension roller 520 and the discharging tension roller 440 for limiting, and then one end of the PVC-PE composite film is fixed to the winding roller for winding.

[0035] The detection box 400 is driven up and down by the lifting mechanism 200, the height of the feeding tension roller 520 and the discharging tension roller 440 changes synchronously, the tension of the PVC-PE composite film of different heights is adjusted, the PVC-PE composite film is tensioned by the feeding tension roller 520 and the discharging tension roller 440, the wrinkles of the PVC-PE composite film are avoided, and the relative height of the PVC-PE composite film in the detection box 400 and the detection part 800 remains unchanged during the adjustment process, so that when the PVC-PE composite film production line is switched, the PVC-PE composite film wound at different heights is detected, the height of the detection part 800 does not need to be adjusted again, the universality of the detection device is improved, and the workload of the technical personnel is reduced.

[0036] The outer tooth ring 517 drives the adjusting ring 513 to rotate by rotating the self-locking knob 511, so that the linkage shaft 515 drives the first dust guide frame 531 to rotate synchronously, so that it drives the soft hair electric cleaning roller 534 to rotate to the position of being attached to the surface of the PVC-PE composite film, and the first dust guide frame 531 is inclined at the same angle as the inclination angle of the PVC-PE composite film by rotating the first dust guide frame 531, so that the dust absorption effect is improved. After the angle adjustment of the two groups of first dust guide frames 531 is completed, the self-locking knob 511 is self-locked to avoid changes in the angle of the two groups of first dust guide frames 531 during detection. By adjusting the position and angle of the two groups of first dust guide frames 531, when the inclination angle of the PVC-PE composite film changes, the two groups of soft hair electric cleaning rollers 534 can be respectively attached to the upper and lower surfaces of the PVC-PE composite film, thereby meeting the cleaning needs of PVC-PE composite films with different inclination angles and improving the cleaning effect.

[0037] The inside of the dust collection box 610 forms a negative pressure by the vacuum pump 620, so that the inside of the dust guide box 700 connected thereto forms a negative pressure, so that the surface of the first dust guide frame 531 forms a negative pressure. By attaching the soft hair electric cleaning roller 534 to the surface of the PVC-PE composite film and continuing to rotate and clean, the dust and impurities attached to the surface of the PVC-PE composite film are sucked into the telescopic dust cover 533 by the first dust guide frame 531, and finally into the dust collection box 610 for collection. By synchronously performing dust absorption operation on the upper and lower surfaces of the PVC-PE composite film, the dust attached to the PVC-PE composite film is avoided to affect the detection data, the dust is collected to effectively avoid secondary pollution to the PVC-PE composite film, thereby further improving the accuracy of the detection data, and avoiding pollution to the external environment.

[0038] The distance between the LED light source 980 and the PVC-PE composite film is adjusted by moving the lamp panel 930 up and down through the two groups of electric push rods 960, and the LED light source 980 is synchronously rotated to a preset angle value by rotating the two groups of electric push rods 960 through the two groups of rotating discs 920, so that the LED light source 980 can adaptively adjust the light distance and the light angle according to the defect detection requirements of PVC-PE composite films of different specifications, so that the device can meet the different light requirements of defect detection of PVC-PE composite films of different specifications, and the detection part 800 and the adjustable light mechanism 900 are arranged in the detection box 400, and the light and defect detection are carried out in the detection box 400, which can effectively avoid the influence of external environmental light on the defect detection data, thereby effectively improving the accuracy of the detection data, avoiding the direct eye of the LED light source 980 to the operator, and causing eye damage, and the appearance image of the PVC-PE composite film is collected by the detection part 800, and the collected image is transmitted to the image processor in real time for image preprocessing and defect recognition operation, and then the data is transmitted to the control panel, so as to facilitate the technical personnel to mark and analyze the data.

[0039] The dust cover 630 protects the air inlet end of the vacuum pump 620, avoids dust from blocking the air inlet end of the vacuum pump 620, and the amount of dust in the dust collection box 610 can be monitored through the perspective window 650, so as to regularly clean the dust in the dust collection box 610 and the dust cover 630.

[0040] Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for detecting appearance defects of a PVC-PE composite film, comprising a movable base, characterized in that: The mobile base is provided with a lifting mechanism, the top of the lifting mechanism is provided with a lifting platform, and the lifting platform is installed with a detection box for detecting appearance defects of the PVC-PE composite film; A feed trough is provided on one side wall of the detection box, and a feed processing assembly is provided on one end of the side wall of the detection box close to the feed trough; The top of the inner wall of the detection box is provided with a detection part, and the inner wall of the detection box is provided with an adjustable lighting mechanism for irradiating the PVC-PE composite film with light at multiple angles and distances; The feed processing assembly includes two sets of transmission boxes, and a feed tensioning roller for limiting and tensioning the PVC-PE composite film is rotatably connected between the two sets of transmission boxes; Two groups of dust suction parts for cleaning dust on the upper and lower surfaces of the PVC-PE composite film are arranged between the two groups of transmission boxes. The dust suction parts include a first dust guide frame and a second dust guide frame. A telescopic dust guide cover is arranged between the first dust guide frame and the second dust guide frame. A soft-bristle electric cleaning roller is installed in the first dust guide frame.

2. The device for detecting appearance defects of a PVC-PE composite film according to claim 1, characterized in that: The two groups of transmission boxes are both installed on the side walls of the detection box, and the feed tensioning roller is arranged above the feed trough.

3. The device for detecting appearance defects of a PVC-PE composite film according to claim 1, characterized in that: A fixed shaft is provided in the transmission box, and two groups of adjusting rings are rotatably connected to the fixed shaft, and the two groups of adjusting rings are fixedly connected with a linkage shaft, and one end of the two groups of linkage shafts are respectively connected to the center of one side of a group of first dust guide frames for damping rotation, and a plurality of groups of racks are provided on the two groups of adjusting rings, and two groups of adjusting shafts are rotatably connected in the transmission box, and the two groups of adjusting shafts are both sleeved with outer gear rings, and the two groups of outer gear rings are respectively meshed with a plurality of racks on a corresponding group of adjusting rings.

4. The device for detecting appearance defects of a PVC-PE composite film according to claim 3, characterized in that: Two groups of self-locking knobs are provided on one group of the transmission boxes. One end of each of the two groups of adjusting shafts passes through the outer wall of the transmission box and is fixedly connected to the corresponding group of self-locking knobs.

5. The device for detecting appearance defects of a PVC-PE composite film according to claim 2, characterized in that: The detection box is also provided with a discharge trough, which is symmetrical with the feed trough. Two groups of raised brackets are provided on the side wall of the detection box and at one end close to the discharge trough. A discharge tensioning roller is rotatably connected between the two groups of raised brackets, and the height of the discharge tensioning roller is the same as that of the feed tensioning roller.

6. The device for detecting appearance defects of a PVC-PE composite film according to claim 1, characterized in that: The lifting platform is also provided with a dust collection mechanism, which is arranged on one side of the detection box. Two groups of dust guide boxes are arranged inside the detection box. The two groups of dust guide boxes are symmetrically arranged. Both groups of dust guide boxes are arranged at one end close to the feed processing component. The two groups of dust guide boxes are respectively connected to the two groups of dust suction parts.

7. The device for detecting appearance defects of a PVC-PE composite film according to claim 6, characterized in that :The dust collecting mechanism includes a dust collecting box, a vacuum pump is installed at the top of the outer wall of the dust collecting box, a dust cover is provided at the top of the inner wall of the dust collecting box, the air inlet end of the vacuum pump passes through the inner wall of the dust collecting box and extends into the dust cover, two groups of dust guide pipes are provided on the dust collecting box, the other ends of the two groups of dust guide pipes extend into the two groups of dust guide boxes respectively, the dust collecting box is provided with a box door, the box door is provided with a perspective window, and transparent glass is embedded in the perspective window.

8. The device for detecting appearance defects of a PVC-PE composite film according to claim 1, characterized in that: The adjustable lighting mechanism includes a motor, two groups of turntables and a light panel. The output end of the motor is transmission-connected to the center of one group of turntables. Both groups of turntables are rotationally connected to the inner wall of the detection box.

9. The device for detecting appearance defects of a PVC-PE composite film according to claim 8, characterized in that: Both groups of turntables are provided with mounting blocks, and both groups of mounting blocks are installed with electric push rods. Both ends of the row of lights are fixedly connected with linkage blocks, and the two groups of linkage blocks are respectively connected to the output ends of the two groups of electric push rods for transmission. Several groups of LED light sources are installed on the row of lights.

10. The device for detecting appearance defects of a PVC-PE composite film according to claim 1, characterized in that: The detection unit includes an installation box and several groups of detection cameras. An image processor and a controller are arranged in the installation box. The image processor and the controller are electrically connected to the several groups of detection cameras. The image processor, the controller and the several groups of detection cameras are all electrically connected to an external power supply.

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