An apparatus for detecting large optical films

Abstract

The present application relates to the technical field of optical film material detection, and specifically to a detection device for large optical film material, which comprises a detection box, a detection assembly, a conveying frame for conveying the film material, the detection box is fixedly arranged on the conveying frame, the detection box is provided with an inlet and an outlet, the film material enters from the inlet and is sent out from the outlet, the detection assembly comprises a detection light source and a light intensity sensor, the detection light source is located below the film material, and the light intensity sensor is located above the film material, the detection box is provided with a control panel and a warning device, the light intensity sensor and the warning device are electrically connected with the control panel respectively, and the control panel is electrically connected with a driving device of the conveying frame, when the light intensity detected by the light intensity sensor exceeds a set value, the control panel controls the driving device to slow down, and the warning device is controlled to issue an alarm, and the present application has the effect of reducing the labor amount of the workers without needing the workers to keep watching the film material at all times.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical film material detection, and particularly to a detection device for large optical film material. BACKGROUND

[0002] With the rapid development of optoelectronic technology, optical films are increasingly widely used in the fields of optoelectronic display, optical communication, optical instruments, etc. The performance and quality of optical films directly affect the performance and service life of related products, and therefore, it is particularly important to accurately and efficiently detect the optical performance of optical films, in which the surface flatness of optical films is one of the important indicators for evaluating the production process level of optical films.

[0003] The traditional optical film detection method mainly relies on manual operation. When detecting, the worker observes the surface of the optical film during transmission by naked eyes to determine whether the surface of the optical film is damaged and whether it contains impurities. However, the detection and judgment by manual operation are easily disturbed by the outside world, and long-time work can easily cause visual fatigue, resulting in low accuracy and reliability of the detection result.

[0004] Based on this, the present application designs a detection device for large optical film material to solve the above problems. SUMMARY

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a detection device for large optical film material, comprising a detection box, a detection assembly, a conveying frame for conveying the film material, the detection box is fixedly arranged on the conveying frame, the detection box is provided with an inlet and an outlet, the film material enters from the inlet and is sent out from the outlet, the detection box is rotatably provided with a guide roller and a guide roller, the guide roller is provided with two, one of which is close to the inlet, and the other is close to the outlet, the guide roller is rotatably arranged on the detection box, the guide roller is higher than the guide roller, the upper surface of the film material abuts against the guide roller, and the lower surface abuts against the guide roller; the detection assembly comprises a detection light source and a light intensity sensor, the detection assembly is arranged in the detection box, the film material between the two guide rollers is located between the detection light source and the light intensity sensor, the film material here is suspended, the detection light source is located below the film material, and the light intensity sensor is located above the film material, the detection box is provided with a control panel and a warning device, the light intensity sensor and the warning device are electrically connected with the control panel respectively, and the control panel is electrically connected with the driving device of the conveying frame, when the light intensity detected by the light intensity sensor exceeds the set value, the control panel controls the driving device to slow down, and controls the warning device to issue an alarm.

[0006] By adopting the technical scheme, when the film material is conveyed, the light emitted by the detection light source is irradiated on the film material and then is transmitted through the film material to the light intensity sensor, when the film material is normal, the light intensity on the light intensity sensor is in the specified range, and the light intensity sensor does not emit a signal to the control panel, when the film material is abnormal, the light intensity sensor detects that the change of the light intensity exceeds the set value, at this time, the light intensity sensor emits a signal to the control panel, the control panel controls the driving device to slow down, and the warning indicator is controlled to issue a warning, so as to timely remind the staff that the film material is abnormal, and to remind the staff to check the technology, without the staff constantly watching the film material, the effect of reducing the labor amount of the staff is achieved.

[0007] Preferably, the detection box is fixedly provided with a protection frame and a fixing frame, the detection light source is located in the protection frame, and the light intensity sensor is located in the fixing frame.

[0008] By adopting the technical scheme, the light intensity sensor is located in the fixing frame, the fixing frame blocks the remaining stray light, reduces the interference of the stray light on the light of the detection light source, and improves the detection accuracy.

[0009] Preferably, the detection light source is composed of a plurality of photodiodes, the light intensity sensor is also provided with a plurality of light intensity sensors, the area of the film material to be detected is divided into a plurality of small areas, each light intensity sensor corresponds to a small area, when the light intensity detected by any light intensity sensor changes beyond the set value, the control panel controls the warning indicator to work, the detection box is provided with a display screen, the display screen is electrically connected with the control panel, and the display screen is used to display the small area detected by the light intensity sensor, when the light intensity is abnormal, the display screen displays that the color of the corresponding small area changes.

[0010] By adopting the technical scheme, the detection area is divided into a plurality of small areas, so that it is known that the abnormality is formed in which area on the film material, and the staff can conveniently understand the cause and position of the abnormality.

[0011] Preferably, a light shield plate is arranged near one side of the feeding port, the light shield plate is located in the detection box, two light shield plates are arranged on the light shield plate in a top-and-bottom mode, a through groove is left between the two light shield plates, the film material is located in the gap between the two light shield plates, and an inclined surface is arranged on the side, where the two light shield plates are close to each other, of the light shield plate, so that the through groove is arranged in an inclined mode.

[0012] By adopting the technical scheme, the through groove is arranged in an inclined mode, so that the external light can be prevented from entering and interfering with the detection, and the light shield plate further blocks the external light, so that the detection accuracy is improved.

[0013] Preferably, a connecting plate is fixedly arranged on the side wall of the detection box, a shading cloth is fixedly arranged on the connecting plate, and the lower side of the shading cloth abuts against the upper surface of the film material.

[0014] By adopting the above technical scheme, the light shielding cloth further blocks the feeding port, reducing the entry of external light into the detection box from the feeding port.

[0015] Preferably, the detection assembly is provided with two groups in the detection box, the first detection assembly is close to the feeding port, and the other group is the second detection assembly, a placing plate is fixedly arranged in the detection box, a pneumatic cylinder is vertically fixedly arranged on the placing plate, the pneumatic cylinder is electrically connected with the control panel, a lifting plate is fixedly arranged on the extension shaft of the pneumatic cylinder, an adsorption plate is fixedly arranged on the lifting plate, an adhesive tape is adsorbed on the adsorption plate, the side of the adhesive tape facing the film material is a glue surface, and the lifting plate is located above the film material; a supporting plate is fixedly arranged in the detection box, a cleaning cloth is fixedly arranged on the supporting plate, the lower surface of the film material is in contact with the supporting plate, and the lifting plate is located between the first detection assembly and the second detection assembly; when the light intensity sensor in the first detection assembly detects abnormal light intensity, when the abnormal part of the film material passes below the adhesive tape, the lifting plate is lowered to make the adhesive tape contact the abnormal part, then the lifting plate is raised to make the adhesive tape separate from the film material, and then the film material enters the second detection assembly for detection.

[0016] By adopting the above technical scheme, when the first detection assembly detects that the surface of the film material is abnormal, the control panel controls the extension shaft of the pneumatic cylinder to extend to make the lifting plate close to the side of the film material until the adhesive tape on the adsorption plate contacts the abnormal part of the film material, the glue surface of the adhesive tape contacts the film material to stick the impurities on the surface of the film material, then the pneumatic cylinder is driven to retract the extension shaft to take away the impurities on the surface of the film material, and then the film material passes through the second detection assembly for detection; when the second detection assembly does not detect abnormality, it indicates that the abnormality of the film material is caused by surface impurities; when the second assembly still detects abnormality, it indicates that the surface of the film material is damaged or the impurities are not removed, and the like, thereby further ensuring the accuracy of film material detection.

[0017] Preferably, the adsorption plate is provided with an adsorption hole, and the adsorption plate is connected to a suction pump; the suction pump is electrically connected with the control panel; the adsorption hole adsorbs the adhesive tape by suction; when the first detection assembly detects that the light intensity far exceeds the set value, the adhesive tape contacts the film material, and at this time the adsorption hole no longer adsorbs the adhesive tape, so that the adhesive tape is attached to the abnormal part of the film material.

[0018] By adopting the above technical scheme, when the light intensity sensor detects that the change of the light intensity exceeds the set value, the adhesive tape contacts the abnormal part of the film material, at this time the control panel controls the suction pump to stop suction, the adsorption hole no longer adsorbs the adhesive tape, and the adhesive tape is attached to the abnormal part of the film material; when the film material is sent out from the detection box, it is convenient for the staff to identify the abnormal part of the film material, and the abnormal part is timely remedied and trimmed, thereby achieving the effect of facilitating the staff to find the abnormal part.

[0019] Preferably, the installation plate is provided with a cleaning assembly, the cleaning assembly comprises a moving seat, a moving plate, and a rubber cylinder, the moving plate is provided on the installation plate in a lifting manner, the installation plate is provided with a lifting assembly for driving the moving plate to lift, the moving plate is fixedly provided with an installation plate, the installation plate is rotatably provided with a lead screw, the moving seat is provided with a moving hole, the moving hole is threadedly connected to the lead screw, the installation plate is provided with a first motor for driving the lead screw to rotate, the moving seat is fixedly connected with an installation rod, the installation rod is fixedly provided with a plug-in block, the rubber cylinder is provided with a plug-in groove, the plug-in block is plugged into the plug-in groove, the installation rod is correspondingly provided with two installation rods on the moving seat, the rubber cylinder is located between the two installation rods, and the rubber cylinder is in contact with the surface of the film material; the cleaning assembly is provided with two groups in an up-down manner, and the film material is located between the rubber cylinder on the upper side and the rubber cylinder on the lower side; when the first detection assembly detects an abnormality, the two rubber cylinders are close to each other and abut on the abnormal part of the film material respectively to roll on the film material.

[0020] By adopting the above technical scheme, when the first detection assembly detects an abnormality of the film material, the cleaning assembly passes through the abnormal part of the film material, the lifting assembly is driven, the two lifting plates are close to each other, and the two rubber cylinders abut on the film material respectively, then the first motor is driven to drive the moving seat to move, the rubber cylinder moves along the surface of the film material, the upper and lower surfaces of the abnormal part of the film material are cleaned, the moving direction of the rubber cylinder is perpendicular to the moving direction of the film material, the surface of the film material is cleaned in a shearing manner, and the damage and influence on the film material are reduced.

[0021] Preferably, the moving seat is fixedly provided with a scraper, the scraper abuts on the film material, the scraper is located in front of the rubber cylinder during movement, and the scraper passes through the abnormal part first relative to the rubber cylinder.

[0022] By adopting the above technical scheme, the impurities on the surface of the film material are scraped off by the scraper during movement, and then the impurities are adsorbed by the rubber cylinder, so that the residual impurities are effectively reduced, and the cleaning effect is improved.

[0023] Preferably, the moving seat is provided with two in the cleaning assembly, the moving directions of the moving seats in the same group are opposite, and the two moving seats move from the middle of the film material to the edge of the film material at the same time during cleaning.

[0024] By adopting the above technical scheme, the two moving seats move from the middle to the outer edge, the cleaning efficiency is improved, the stress on the film material is uniform, the deformation of the film material is reduced, and the influence on the film material is reduced.

[0025] In summary, the application has the following beneficial technical effects: when the film material is conveyed, the detection light source emits light on the film material and the light transmits through the film material to the light intensity sensor, when the film material is normal, the light intensity on the light intensity sensor is in the specified range, the light intensity sensor does not emit a signal to the control panel, when the film material is abnormal, the light intensity sensor detects that the light intensity changes beyond the set value, the light intensity sensor emits a signal to the control panel at this time, the control panel controls the driving device to slow down, and the warning indicator emits an alarm at the same time, so as to timely remind the staff that the film material is abnormal, so as to remind the staff to check the technology, without the staff staring at the film material at all times, the effect of reducing the labor amount of the staff is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 It is a structure schematic diagram of the film material conveying on the conveying frame in the embodiment 1.

[0028] Figure 2 It is a position structure schematic diagram of the control panel in the embodiment 1.

[0029] Figure 3 It is an internal structure schematic diagram of the detection box in the embodiment 1.

[0030] Figure 4 It is a position structure schematic diagram of the photodiode in the embodiment 1.

[0031] Figure 5 It is a position structure schematic diagram of the light intensity sensor in the embodiment 1.

[0032] Figure 6 It is an installation structure schematic diagram of the lifting plate in the embodiment 2.

[0033] Figure 7 It is an installation structure schematic diagram of the adhesive tape in the embodiment 2.

[0034] Figure 8 It is a position structure schematic diagram of the two groups of detection assemblies in the embodiment 3.

[0035] Figure 9 It is a position structure schematic diagram of the adhesive tape in the embodiment 3.

[0036] Figure 10 It is an installation structure schematic diagram of the moving plate in the embodiment 4.

[0037] Figure 11 Figure 6 is a schematic view of the mounting structure of the moving seat in the embodiment 4;

[0038] Figure 12 Figure 7 is a schematic view of the structure of the rubber cylinder mounted on the moving seat in the embodiment 4;

[0039] Figure 13 Figure 8 is a schematic view of the position structure of the first guide rod in the embodiment 4;

[0040] Figure 14 Figure 9 is a schematic view of the position structure of the feeding plate in the embodiment 4;

[0041] Figure 15 Figure 10 is a schematic view of the structure of the support seat in the embodiment 4;

[0042] Figure 16 Figure 11 is a schematic view of the position structure of the second guide rod in the embodiment 4;

[0043] Figure 17 Figure 12 is a schematic view of the structure of the moving seat located in the middle of the film material in the embodiment 5.

[0044] In the drawings, the components represented by each reference numeral are listed as follows:

[0045] 1, detection box; 2, conveying frame; 3, conveying roller; 4, sealing cover; 5, feeding port; 6, discharging port; 7, guide roller; 8, guide roller; 9, light shield plate; 10, passing groove; 11, connecting plate; 12, light shielding cloth; 13, film material; 14, light intensity sensor; 15, photodiode; 16, protection frame; 17, fixed frame; 18, control panel; 19, warning device; 20, display screen; 21, placing plate; 22, air cylinder; 23, lifting plate; 24, adsorption plate; 25, adsorption hole; 26, adhesive tape; 27, support plate; 28, cleaning cloth; 29, moving seat; 30, moving plate; 31, rubber cylinder; 32, fourth motor; 33, mounting plate; 34, lead screw; 35, moving hole; 36, first motor; 37, guide rod; 38, guide hole; 39, first guide rod; 40, fixed plate; 41, support rod; 42, feeding plate; 43, support seat; 44, second guide rod; 45, vertical plate; 46, upper plate; 47, middle plate; 48, lower plate; 49, sliding groove; 50, stabilizing groove; 51, stabilizing strip; 52, rack; 53, third motor; 54, gear; 55, scraper; 56, plug-in block; 57, plug-in groove; 58, mounting rod; 59, connecting rod. DETAILED DESCRIPTION

[0046] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0047] The above and other aspects of the present application will become more apparent by describing in detail the embodiments thereof with reference to the attached drawings in which: Figures 1-17 The present application will be further described in detail.

[0048] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Figures 1-5 In the embodiment 1, the detection device for large optical film material includes a detection box 1, a detection assembly, a conveying frame 2 for conveying the film 13. The film in the embodiment is a mobile phone film. The detection box 1 is made of light-proof material and is arranged on the upper side of the detection box 1. The upper side of the detection box 1 is covered with a sealing cover 4. The conveying frame 2 is provided with a conveying roller 3 rotatingly arranged thereon. The conveying frame 2 is provided with a driving device for driving the conveying roller 3 to rotate. In the embodiment, the driving device is a motor. The film 13 is conveyed on the plurality of conveying rollers 3. The conveying rollers 3 can straighten and flatten the film 13, facilitating the conveying of the film 13 and subsequent processing and winding.

[0049] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Figures 1-5 The detection box 1 is fixedly arranged on the conveying frame 2. The detection box 1 is provided with an inlet 5 and an outlet 6. The film 13 enters from the inlet 5 and is sent out from the outlet 6. The detection box 1 is provided with guide rollers 7 and guide rollers 8 rotatingly arranged thereon. The guide rollers 8 are provided with two guide rollers 8. One of the guide rollers 8 is close to the inlet 5, and the other guide roller 8 is close to the outlet 6. The guide rollers 7 are provided with two guide rollers 7 rotatingly arranged on the detection box 1. The guide rollers 7 are higher than the guide rollers 8. The upper surface of the film 13 abuts against the guide rollers 8, and the lower surface of the film 13 abuts against the guide rollers 7.

[0050] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Figures 1-5, the light blocking plate 9 is located in the detection box 1, two light blocking plates 9 are arranged on the upper and lower sides of the light blocking plate 9, a through groove 10 is left between the two light blocking plates 9, the film material 13 is located in the gap between the two light blocking plates 9, and an inclined surface is formed on the side close to each other of the two light blocking plates 9, so that the through groove 10 is arranged to be inclined; since the guide roller 7 is higher than the guide roller 8, after the film material 13 enters the detection box 1, the guide roller 7 and the guide roller 8 guide the film material 13 to be inclined and upwardly conveyed, the through groove 10 is arranged to be inclined and matched with the inclined film material 13, and the film material 13 is facilitated to pass through; the film material 13 is inclined and conveyed after entering, light outside the detection box 1 is reduced from entering along the film material 13, and the light blocking plate 9 can further shield light at the feeding port 5, and further reduce external light from entering; in order to further shield the feeding port 5, a connecting plate 11 is further fixedly arranged on the side wall of the detection box 1, a light shielding cloth 12 is fixedly arranged on the connecting plate 11, the lower side of the light shielding cloth 12 abuts against the upper surface of the film material 13, the light shielding cloth 12 further blocks the feeding port 5, reduces external light from entering the detection box 1 through the feeding port 5, and the light shielding cloth 12 can also preliminarily block impurities on the upper surface of the film material 13, and reduce impurities remaining on the film material 13.

[0051] Referring to Figures 1-5 , the film material 13 is inclined and upwardly conveyed under the guidance of the guide roller 8 and the guide roller 7 after entering the detection box 1, then is horizontally conveyed under the guidance of the two guide rollers 7, then is inclined and downwardly conveyed under the guidance of the guide roller 7 and the guide roller 8, and finally is sent out from the discharging port 6; the detection part of the film material 13 in the embodiment is located in the horizontal conveying part guided by the two guide rollers 7, and this part is called a film material 13 detection part.

[0052] Referring to Figures 1-5 , the detection assembly comprises a detection light source and a light intensity sensor 14, the detection assembly is arranged in the detection box 1, the film material 13 (the film material 13 detection part) between the two guide rollers 7 is located between the detection light source and the light intensity sensor 14, and the film material 13 detection part is in a suspended state; the detection light source is located below the film material 13, the detection light source in the embodiment comprises a plurality of photodiodes 15, and the plurality of photodiodes 15 are connected to an external power supply; and details are not described herein; the detection box 1 is fixedly provided with a protection frame 16, the plurality of photodiodes 15 are located in the protection frame 16, and the plurality of photodiodes 15 irradiate upwardly;

[0053] Referring to Figures 1-5The detection box 1 is provided with a fixed frame 17 on the upper side, the fixed frame 17 is located above the protection frame 16, the fixed frame 17 corresponds to the protection frame 16, the light intensity sensor 14 is fixedly arranged in the fixed frame 17, and the light intensity sensor 14 is provided with a plurality of light intensity sensors 14 in the fixed frame 17; the area of the film material 13 to be detected is divided into a plurality of small areas, specifically, the film material 13 is divided into a plurality of small areas along the width direction, each light intensity sensor 14 corresponds to a small area, the detection box 1 is provided with a control panel 18 and a warning device 19, the warning device 19 in the embodiment is a warning light, the light intensity sensor 14 and the warning device 19 are electrically connected with the control panel 18 respectively, and the control panel 18 is electrically connected with the driving device of the conveying frame 2;

[0054] With reference to Figures 1-5 When the film material 13 is conveyed, the detection light emitted by the detection light source is irradiated on the film material 13 and transmits through the film material 13 to the light intensity sensor 14, when the film material 13 is normal, the light intensity on the light intensity sensor 14 is in a specified range at this time, the light intensity sensor 14 does not emit a signal to the control panel 18, at this time, the film material 13 is normally conveyed; when the film material 13 is abnormal, the abnormal part of the film material 13 will cause the light intensity to change, so that the light intensity sensor 14 detects that the change of the light intensity exceeds the set value, at this time, the light intensity sensor 14 emits a signal to the control panel 18, the control panel 18 controls the driving device to slow down, and controls the warning device 19 to issue an alarm at the same time, the warning light in the embodiment works and emits light, so that the staff is timely reminded of the abnormality of the film material 13, so that the staff is reminded to check the technology, and the staff does not need to stare at the film material 13 at all times, so that the labor amount of the staff is reduced.

[0055] With reference to Figures 1-5 The detection box is provided with a display screen 20, the display screen 20 is electrically connected with the control panel 18, and the display screen 20 is used for displaying the small area detected by the light intensity sensor 14; when any one of the light intensity sensors 14 detects that the light intensity is abnormal, at this time, the control panel 18 controls the display screen 20 to display that the color of the corresponding small area changes, in the embodiment, the color of the corresponding small area when normal is green, and the corresponding area displays red when abnormal, the detection area is divided into a plurality of small areas, so that it is known that the abnormality is formed in which area on the film material 13, so that the staff can understand the cause and position of the abnormality.

[0056] With reference to Figures 1-5Before detection, the light intensity sensor 14 is calibrated in advance, the normal film material 13 is sent into the detection box 1, the normal film material 13 is detected, and the light intensity range of the normal film material 13 is obtained. According to the film material 13 of different thickness, different material and different color sent in, the different light intensity range is adjusted to adapt to the detection of different film materials 13, and the accuracy is improved. The observation area is arranged on the conveying frame 2, and the abnormal part of the film material 13 is convenient for the staff to observe.

[0057] The implementation principle of the embodiment 1 is that when the film material 13 is conveyed and enters the detection box 1, the film material 13 passes through the detection light source under the guidance of the two guide rollers 7. The light emitted by the detection light source is irradiated on the film material 13 and transmits through the film material 13 to the light intensity sensor 14. When the film material 13 is normal, the light intensity on the light intensity sensor 14 is in the specified range at this time, and the light intensity sensor 14 does not emit a signal to the control panel 18. When the film material 13 is abnormal, the light intensity sensor 14 corresponding to the small area detects that the change of the light intensity exceeds the set value, at this time, the light intensity sensor 14 emits a signal to the control panel 18, the control panel 18 controls the driving device to slow down, and the warning indicator 19 issues an alarm, and the display screen 20 displays the abnormal area in the width direction, so as to timely remind the staff that the film material 13 is abnormal, and the staff does not need to stare at the film material 13 at all times, and the labor amount of the staff is reduced.

[0058] After the film material 13 comes out of the detection box 1, the control panel 18 controls the driving device of the conveying frame 2, so that the abnormal part of the film material 13 moves a certain distance and then enters the observation area. After entering the observation area, the film material 13 moves at low speed. According to the abnormal area displayed on the display screen 20, the staff only needs to observe the corresponding area of the film material 13 to understand the reason of the abnormality of the film material 13, and the staff can conveniently find and observe.

[0059] Reference Figures 6-7 The difference between the embodiment 2 and the embodiment 1 is that the detection box 1 is fixedly provided with a placing plate 21, the placing plate 21 is vertically fixedly provided with a gas cylinder 22, the gas cylinder 22 is electrically connected with the control panel 18; a lifting plate 23 is fixedly arranged on the telescopic shaft of the gas cylinder 22, the lifting plate 23 is located above the film material 13, an adsorption plate 24 is fixedly arranged on the lifting plate 23, the adsorption plate 24 is provided with an adsorption hole 25, the adsorption plate 24 is connected with a suction pump, the suction pump is electrically connected with the control panel 18, a tape 26 is adsorbed on the adsorption plate 24, and the tape 26 is provided with adhesive on one side and faces the film material 13; the detection box 1 is fixedly provided with a supporting plate 27, the supporting plate 27 is located below the adsorption plate 24, and the supporting plate 27 is in contact with the lower surface of the film material 13.

[0060] The implementation principle of this embodiment 2 is that when the detection assembly detects that the film material 13 is abnormal, the control panel 18 controls the driving device of the conveying frame 2 to drive the film material 13 to move a certain distance, so that the abnormal part of the film material 13 is located between the adsorption plate 24 and the supporting plate 27. At this time, the control panel 18 controls the extension shaft of the air cylinder 22 to extend, so that the adsorption plate 24 moves towards the side of the film material 13. After the adhesive tape 26 is attached to the film material 13, the control panel 18 controls the air suction pump to stop suction, so that the adsorption hole 25 releases the adhesive tape 26. The control panel 18 controls the air cylinder 22 to make the lifting plate 23 rise, so that the adhesive tape 26 is attached to the abnormal part of the film material 13. Then the control panel 18 controls the driving device of the conveying frame 2 to continue to drive the film material 13 to move. After the film material 13 with the adhesive tape 26 comes out of the detection box 1, the staff quickly finds the abnormal part of the film material 13 according to the position of the attached adhesive tape 26, which further facilitates the staff to find and reduces the staff's finding time, so as to reduce the labor amount of the staff.

[0061] With reference to Figures 8-9 The difference between embodiment 3 and embodiment 2 is that two detection assemblies are arranged in the detection box 1. The one close to the feeding port 5 is the first detection assembly, and the other is the second detection assembly. The lifting plate 23 is located between the first detection assembly and the second detection assembly. The supporting plate 27 is fixedly provided with a cleaning cloth 28.

[0062] The implementation principle of this embodiment 3 is that the light intensity sensor 14 in the first detection assembly detects abnormal light intensity. When the abnormal part of the film material 13 passes below the adhesive tape 26, the control panel 18 controls the air cylinder 22 to make the lifting plate 23 move downward, so that the adhesive tape 26 contacts the abnormal part. At this time, the adsorption plate 24 does not release the adhesive tape 26. After the adhesive tape 26 contacts the surface of the abnormal part of the film material 13, the impurities on the surface of the film material 13 are adsorbed. The lower surface of the film material 13 contacts the supporting plate 27. The cleaning cloth 28 scrapes the impurities on the lower surface of the film material 13, so as to clean the film material 13. Then the lifting plate 23 moves upward, so that the adhesive tape 26 is separated from the film material 13. The cleaned film material 13 enters the second detection assembly for detection.

[0063] With reference to Figures 10-16 When the second detection assembly does not detect abnormality, it indicates that the abnormality of the film material 13 is caused by surface impurities, and the film material 13 returns to normal after cleaning. When the second assembly still detects abnormality, it indicates that the surface of the film material 13 is damaged or the impurities are not removed, and the like. After the film material 13 comes out, the staff observes the abnormal part of the film material 13 in the manner of embodiment 1. Through the manner of this embodiment, the abnormal part of the film material 13 is cleaned after detecting that the abnormality is caused by part of the impurities, so as to effectively reduce the waste of subsequent stopping conveying time, improve the detection efficiency and conveying efficiency, and further improve the detection accuracy through twice detection.

[0064] With reference to Figures 10-16 Meanwhile, when the first detection assembly detects that the light intensity is far beyond the set value, after the adhesive tape 26 contacts the film material 13, the control panel 18 controls the suction pump to stop the suction hole 25 from sucking the adhesive tape 26, so that the adhesive tape 26 is attached to the abnormal part of the film material 13, facilitating the staff to identify the abnormal part of the film material 13.

[0065] With reference to Figures 10-16 The difference between the embodiment 4 and the embodiment 3 is that the cleaning assembly is arranged on the placing plate 21, the cleaning assembly comprises a moving seat 29, a moving plate 30 and a rubber cylinder 31, the moving plate 30 is arranged in a lifting manner on the placing plate 21, and the placing plate 21 is provided with a lifting assembly for driving the moving plate 30 to lift, in the embodiment, the lifting assembly drives the moving plate 30 to lift in a manner of transmission of a lead screw 34, the fourth motor 32 is used as a drive, the fourth motor 32 is electrically connected with the control panel 18, and the principle of the lead screw 34 is the same as that described later; the moving plate 30 is fixedly provided with a mounting plate 33, two mounting plates 33 are arranged in correspondence, the lead screw 34 is rotatably arranged between the two mounting plates 33, the moving seat 29 is provided with a moving hole 35, the moving hole 35 is threadedly connected with the lead screw 34, one of the mounting plates 33 is provided with a first motor 36 for driving the lead screw 34 to rotate, the first motor 36 is electrically connected with the control panel 18, the mounting plate 33 is fixedly provided with a guide rod 37, and the moving seat 29 is provided with a guide hole 38, the guide hole 38 is sleeved on the guide rod 37;

[0066] With reference to Figures 10-16 The moving seat 29 is fixedly connected with a mounting rod 58, the mounting rod 58 in the embodiment is made of a material with good elasticity, such as a PE plastic rod, the mounting rod 58 is fixedly provided with a plug-in block 56, the rubber cylinder 31 is provided with a plug-in groove 57, the plug-in block 56 is plugged into the plug-in groove 57, the mounting rod 58 is provided with two on the moving seat 29, the rubber cylinder 31 is located between the two mounting rods 58, and the two plug-in blocks 56 are plugged into the plug-in grooves 57, so that the rubber cylinder 31 is mounted on the mounting rod 58; the rubber cylinder 31 is in contact with the surface of the film material 13, and the cleaning assembly is arranged in two layers, the rubber cylinder 31 on the upper side and the rubber cylinder 31 on the lower side are located between the rubber cylinder 31 on the upper side and the rubber cylinder 31 on the lower side.

[0067] With reference to Figures 10-16The detection box 1 is provided with a cylinder removing assembly and an upper cylinder assembly. The cylinder removing assembly comprises a first guide rod 39 and a fixed plate 40. The fixed plate 40 is fixedly arranged in the detection box 1 and is close to the mounting plate 33. The fixed plate 40 is fixedly provided with a support rod 41. The first guide rod 39 is fixedly connected to the support rod 41 and is arranged obliquely. Two cylinder removing assemblies are arranged above and below. Two fixed plates 40 are arranged in each cylinder removing assembly. When the moving seat 29 moves towards the side of the first motor 36, the mounting rod 58 approaches the first guide rod 39. Since the guide is arranged obliquely, one end of the first guide rod 39 enters between the mounting rod 58 and the rubber cylinder 31 first, and the other end is still located outside the mounting rod 58. With the continuous movement of the mounting rod 58, the first guide rods 39 in the two cylinder removing assemblies respectively contact the mounting rod 58, move the mounting rod 58 outward, make the plug-in block 56 open outward, and until the plug-in block 56 is separated from the plug-in groove 57, so that the rubber cylinder 31 is separated. After the mounting rod 58 is separated from the first guide rod 39, the mounting rod 58 returns to the normal state. Two cylinder removing assemblies are arranged, one on the upper side and one on the lower side.

[0068] Referring to Figures 10-16 The upper cylinder assembly comprises a feeding plate 42, a support seat 43 and a second guide rod 44. The feeding plate 42 comprises a vertical plate 45, an upper plate 46, a middle plate 47 and a lower plate 48. The upper plate 46, the middle plate 47 and the lower plate 48 are respectively fixedly connected to the vertical plate 45 vertically, so that the entire feeding plate 42 forms an E-shaped structure. The rubber cylinder 31 on the upper side is placed between the upper plate 46 and the middle plate 47, and is adhered to the side walls of the upper plate 46 and the middle plate 47. The rubber cylinder 31 on the lower side is placed between the middle plate 47 and the lower plate 48, and is adhered to the side walls of the middle plate 47 and the lower plate 48. The film material 13 is located between the upper cylinder assembly and the cylinder removing assembly. The support seat 43 is fixedly arranged on the detection box 1. The support seat 43 is provided with two sliding grooves 49. The feeding plate 42 slides in the sliding grooves 49. The groove walls of the sliding grooves 49 are provided with stable grooves 50. The upper plate 46 is fixedly provided with a stable strip 51 which is located in the stable groove 50 on the upper side. The lower plate 48 is also fixedly provided with a stable strip 51 which is located in the stable groove 50 on the lower side.

[0069] Referring to Figures 10-16The side wall of the feeding plate 42 is fixedly provided with a rack 52. The detection box 1 is provided with a third motor 53, which is electrically connected with the control panel 18. A gear 54 coaxially fixed on the rotating shaft of the third motor 53 is engaged with the rack 52. When the gear 54 rotates, the feeding plate 42 is driven to move. The third motor 53 is provided with a plurality of third motors in the detection box 1. The feeding plate 42 is fixedly provided with a connecting rod 59. The connecting rod 59 is fixedly provided with a second guide rod 44. The second guide rod 44 is fixedly provided on the connecting rod 59. The second guide rod 44 is inclined from top to bottom. The lower end is close to the rubber cylinder 31. When the moving plate 30 moves downward, the installation rod 58 is located above the second guide rod 44. After moving a distance, the upper end of the second guide rod 44 is located inside the installation rod 58, and the lower end is outside the installation rod 58. With the continuous downward movement of the moving plate 30, the second guide rod 44 will expand the installation rod 58. When the installation rod 58 is separated from the second guide rod 44, the installation rod 58 rebounds, and the plug-in block 56 is plugged into the plug-in groove 57. Then, with the horizontal movement of the moving seat 29, the rubber cylinder 31 on the feeding plate 42 is taken out, so as to complete the cylinder. The upper cylinder assembly is provided with two, one is located on the upper side, and the other is located on the lower side.

[0070] Referring to Figures 10-16 The rubber cylinder 31 is placed on the feeding plate 42. The rubber cylinder 31 on the upper side and the rubber cylinder 31 on the lower side of the feeding plate 42 are a group. When one group of rubber cylinders 31 is taken out, the third motor 53 is driven to rotate the gear 54 by a specified number of turns, so as to drive the feeding plate 42 to move by a specified distance, so as to move the next group of rubber cylinders 31 to the feeding position. The moving seat 29 is fixedly provided with a scraper. The scraper is in contact with the film material 13. When moving, the scraper is located in front of the rubber cylinder 31. The rubber cylinder 31 is lower than the lower surface of the scraper 55. When the scraper 55 contacts the film material, the upper and lower rubber cylinders 31 are clamped with each other.

[0071] The implementation principle of this embodiment 4 is that when the first group of detection components detects an anomaly, the control panel 18 controls the fourth motor 32 to lower the moving plate 30, and at this time, the mounting rod 58 located above the second guide rod 44 starts to move downward; after moving a certain distance, under the guidance of the second guide rod 44, the mounting rod 58 is opened, and then moves downward; when the mounting rod is out of contact with the second guide rod, the plug-in block 56 is plugged into the plug-in slot 57, and then moves downward by a distance, until the front ends of the two scrapers 55 respectively abut against the film material, at this time the mounting rod 58 is slightly bent; then the control panel 18 controls the first motor 36 to rotate the lead screw 34, driving the moving seat 29 to move along the width direction of the film material 13, the moving seats 29 on the upper and lower sides move simultaneously, and the rubber cylinder 31 abuts against the film material after being separated from the feeding plate 42, at this time the mounting rod is still in a bent state; when the moving seat 29 continues to move, the scraper 55 abuts against the film material 13 to move, and the rubber cylinder 31 abuts against the film material 13 to move; the scraper 55 scrapes the impurities on the film material 13, and at the same time the rubber cylinder 31 adsorbs the impurities on the surface of the film material 13, sufficiently removing the impurities on the film material 13, the moving direction of the rubber cylinder 31 is perpendicular to the moving direction of the film material 13, and the surface of the film material 13 is cleaned by shearing movement, reducing the damage to the film material 13 and the influence of other parts;

[0072] The two rubber cylinders 31 abut against the film material 13 from top to bottom respectively, and the two scrapers abut against the film material 13 from top to bottom respectively, which can support each other and further reduce the influence on the film material 13; after the cleaning of the rubber cylinder 31 is completed and the rubber cylinder 31 is separated from the film material 13, the mounting rod 58 approaches the first guide rod 39, and then the mounting rod 58 contacts the first guide rod 39, under the guidance of the first guide rod 39, the mounting rod 58 is opened to make the rubber cylinder 31 with impurities fall off, completing the cylinder removal, and finally the control panel 18 controls the fourth motor 32 to move the moving plate 30 upward to reset.

[0073] Referring to Figures 10-17 , the difference between embodiment 5 and embodiment 4 is that the moving seat 29 is provided with two in the cleaning assembly, the moving directions of the two moving seats 29 in the same group are opposite, and the two moving seats 29 simultaneously move from the middle of the film material 13 to the edge of the film material 13 during cleaning, the moving seats 29 of the upper and lower cleaning assemblies simultaneously move from the middle of the film material 13 to the outside of the film material 13, which improves the cleaning efficiency and the stress uniformity of the film material 13, reduces the deformation and rolling of the film material 13, and thus reduces the influence on the film material 13.

[0074] In the description of the application, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0075] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screwed" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited, the above-mentioned terms in the present application can be understood according to the specific meaning in the specific circumstances by those skilled in the art.

[0076] Although the embodiments of the application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A detection device for large optical films, characterized in that: The system includes a testing box (1), testing components, and a conveyor frame (2) for conveying the film material (13). The testing box (1) is fixedly mounted on the conveyor frame (2). The testing box (1) has an inlet (5) and an outlet (6). The film material (13) enters through the inlet (5) and exits through the outlet (6). The testing box (1) is rotatably equipped with a guide roller (7) and a guide roller (8). There are two guide rollers (8), one of which is close to the inlet (5) and the other is close to the outlet (6). Two guide rollers (7) are rotatably mounted on the detection box (1). The guide rollers (7) are higher than the guide rollers (8). The upper surface of the film material (13) abuts against the guide rollers (8), and the lower surface abuts against the guide rollers (7). The detection assembly includes a detection light source and a light intensity sensor (14). The detection assembly is set in the detection box (1). The film material (13) located between the two guide rollers (7) is located between the detection light source and the light intensity sensor (14). The detection light source is located below the film material (13), and the light intensity sensor (14) is located above the film material (13). The detection box (1) is equipped with a control panel (18) and an alarm (19). The light intensity sensor (14) and the alarm (19) are electrically connected to the control panel (18), and the control panel (18) is electrically connected to the drive device of the conveyor frame (2). When the light intensity detected by the light intensity sensor (14) exceeds the set value, the control panel (18) controls the drive device to decelerate and simultaneously controls the alarm (19) to sound an alarm. The detection box (1) is fixedly equipped with a protective frame (16) and a fixed frame (17). The detection light source is located in the protective frame (16), and the light intensity sensor (14) is located in the fixed frame (17). The detection light source is provided by... Composed of multiple photodiodes (15), and multiple light intensity sensors (14) are also provided. The area to be detected in the film material (13) is divided into multiple small areas. Each light intensity sensor (14) corresponds to a small area. When the light intensity change detected by any of the light intensity sensors (14) exceeds the set value, the control panel (18) controls the alarm (19) to work. The detection box (1) is equipped with a display screen (20). The display screen (20) is electrically connected to the control panel (18). The display screen (20) is used to display the small area detected by the light intensity sensor (14). When the light intensity is abnormal, the display screen (20) shows that the color of the corresponding small area has changed.A placement plate (21) is fixedly installed in the detection box (1). A cylinder (22) is vertically fixedly installed on the placement plate (21). The cylinder (22) is electrically connected to the control panel (18). A lifting plate (23) is fixedly installed on the telescopic shaft of the cylinder (22). An adsorption plate (24) is fixedly installed on the lifting plate (23). Adhesive tape (26) is adsorbed on the adsorption plate (24). The side of the adhesive tape (26) facing the membrane material (13) is the adhesive surface. The lifting plate (23) is located above the membrane material (13). The light intensity sensor (14) in the detection assembly detects an abnormal light intensity. When the abnormal part of the membrane material (13) passes under the adhesive tape (26), the lifting plate (23) moves down to let the adhesive tape (26) contact the abnormal part. Then the lifting plate (23) moves up to let the adhesive tape (26) detach from the membrane material (13) and then enter the detection assembly for detection.

2. The detection device for large optical films according to claim 1, characterized in that: A light-blocking plate (9) is provided on the side near the feed inlet (5). The light-blocking plate (9) is located in the detection box (1). There are two light-blocking plates (9) arranged vertically. A passage groove (10) is left between the two light-blocking plates (9). The film material (13) is located in the gap between the two light-blocking plates (9). An inclined surface is opened on the side of the two light-blocking plates (9) that are close to each other, so that the passage groove (10) is inclined.

3. The detection device for large optical films according to claim 1, characterized in that: A connecting plate (11) is fixedly installed on the side wall of the testing box (1), and a light-shielding cloth (12) is fixedly installed on the connecting plate (11). The lower side of the light-shielding cloth (12) abuts against the upper surface of the membrane material (13).

4. The detection device for large optical films according to claim 3, characterized in that: A support plate (27) is fixedly installed in the detection box (1), and a cleaning cloth (28) is fixedly installed on the support plate (27). The lower surface of the membrane material (13) is in contact with the support plate (27), and the lifting plate (23) is located between the detection components and the detection components.

5. The detection device for large optical films according to claim 4, characterized in that: The adsorption plate (24) has an adsorption hole (25). The adsorption plate (24) is externally connected to the air pump. The air pump is electrically connected to the control panel (18). The adsorption hole (25) uses air suction to hold the tape (26). When the detection component detects that the light intensity exceeds the set value, the tape (26) comes into contact with the membrane material (13). At this time, the adsorption hole (25) no longer adsorbs the tape (26), allowing the tape (26) to adhere to the abnormal part of the membrane material (13).

6. The detection device for large optical films according to claim 4, characterized in that: A cleaning assembly is provided on the placement plate (21). The cleaning assembly includes a movable base (29), a movable plate (30), and a rubber cylinder (31). The movable plate (30) is ellipsably mounted on the placement plate (21). A lifting assembly for driving the movable plate (30) to rise and fall is provided on the placement plate (21). A mounting plate (33) is fixedly mounted on the movable plate (30). A lead screw (34) is rotatably mounted on the mounting plate (33). A movable hole (35) is provided on the movable base (29). The movable hole (35) is threadedly connected to the lead screw (34). A first motor (36) for driving the lead screw (34) to rotate is provided on the mounting plate (33). A mounting bracket is fixedly connected to the movable base (29). Mounting rod (58), on which a plug-in block (56) is fixedly installed, and a plug-in groove (57) is opened on the rubber tube (31), and the plug-in block (56) is inserted into the plug-in groove (57). There are two mounting rods (58) on the moving seat (29), and the rubber tube (31) is located between the two mounting rods (58). The rubber tube (31) is in contact with the surface of the membrane material (13). The cleaning component is arranged in two sets, one above the other. The membrane material (13) is located between the upper rubber tube (31) and the lower rubber tube (31). When the detection component detects an abnormality, the two rubber tubes (31) approach each other and abut against the abnormal part of the membrane material (13) respectively, and roll on the membrane material (13).

7. The detection device for large optical films according to claim 6, characterized in that: A scraper (55) is fixedly installed on the movable seat (29). The scraper (55) abuts against the membrane material (13). When moving, the scraper (55) is located in front of the rubber cylinder (31). The scraper (55) passes through the abnormal part first relative to the rubber cylinder (31).

8. The detection device for large optical films according to claim 6, characterized in that: Two movable seats (29) are provided in the cleaning assembly. The two movable seats (29) in the same group move in opposite directions. During cleaning, the two movable seats (29) move simultaneously from the middle of the membrane material (13) toward the edge of the membrane material (13).

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