Thin film defect detection device

Abstract

The utility model provides a thin film defect detection device which is used for detecting defects of a thin film and comprises a darkroom, a plurality of lamp boxes, a thin film winding and unwinding assembly and a plurality of steam detection assemblies, the plurality of lamp boxes are arranged on the wall of the darkroom and are used for forming an illumination field covering the whole darkroom; the film winding and unwinding assembly is arranged in the darkroom and used for unfolding and moving the film; each steam detection assembly comprises a steam nozzle, a sliding rail and a driving part, the length direction of the sliding rail is parallel to the width direction of the film, the steam nozzle is slidably connected to the sliding rail, the output end of the driving part is connected to the steam nozzle, and the driving part can drive the steam nozzle to move in the length direction of the sliding rail; the sliding rails of the multiple steam detection assemblies are arranged at intervals in the length direction of the thin film. The thin film defect detection device can realize accurate detection of thin film defects.

Description

Technical Field

[0001] The utility model relates to the technical field of thin film defect detection equipment, and more specifically to a thin film defect detection device. Background Art

[0002] Films are widely used in printing and packaging, release materials, and coatings. Their appearance defects are a key supervisory inspection indicator, and are a key inspection item for national and local government market supervision departments in all previous supervisory spot checks and on-site law enforcement. Existing inspection devices typically mount a row of lamps on a rack, illuminating the film with the lamps and observing the film surface under the light to detect defects. This setup limits the area illuminated by the lamps, requiring the lamps to be moved for observation during the inspection process. This is very inconvenient, easily misses defects, and has low accuracy. Utility Model Content

[0003] (1) Technical issues to be resolved

[0004] The technical problem to be solved by the utility model is that the defect detection accuracy of the existing detection device is not high.

[0005] (2) Technical solution

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The utility model provides a film defect detection device for detecting defects in a film, comprising a darkroom, a plurality of light boxes, a film reeling and unreeling assembly, and a plurality of steam detection assemblies; the plurality of light boxes are arranged on the walls of the darkroom to form a lighting field covering the entire darkroom; the film reeling and unreeling assembly is arranged in the darkroom to unfold and move the film; each steam detection assembly comprises a steam nozzle, a slide rail, and a driving part, the length direction of the slide rail is parallel to the width direction of the film, the steam nozzle is slidably connected to the slide rail, the output end of the driving part is connected to the steam nozzle, and the driving part can drive the steam nozzle to move along the length direction of the slide rail; wherein the slide rails of the plurality of steam detection assemblies are arranged at intervals along the length direction of the film.

[0008] Preferably, the film unwinding and rewinding assembly includes an unwinding roller, a rewinding roller and two flattening rollers, the two flattening rollers are arranged between the unwinding roller and the rewinding roller, the unwinding roller is used for unwinding the film, and the rewinding roller is used for rewinding the film.

[0009] Preferably, the steam detection assembly further comprises a steam generator and a hose, wherein the hose connects the steam generator and the steam nozzle.

[0010] Preferably, the film defect detection device further comprises a visual detection component, and the visual detection component and the steam detection component are arranged on two sides of the film opposite to each other.

[0011] Preferably, the light box includes a plurality of light tubes arranged at intervals.

[0012] Preferably, the lamp tube is a three-wavelength lamp tube.

[0013] Preferably, the driving part includes a motor, a screw and a nut, the nut is fixedly connected to the steam nozzle, one end of the screw is threadedly connected to the nut, and the other end of the screw is transmission-connected to the motor.

[0014] Preferably, the steam detection component further includes a controller, and the plurality of steam detection components are electrically connected to the controller.

[0015] (3) Beneficial effects

[0016] The above technical solution of the present utility model has at least the following advantages:

[0017] In the present invention, a light box is arranged on each wall of the dark room, and a plurality of lamp tubes are arranged at intervals inside the light box. The light source emitted by the lamp tubes can generate a lighting field covering the entire dark room, thereby irradiating the entire surface of the film, so that the inspector can observe the defects on the film. Compared with the inspection equipment in the prior art that requires mobile lamps, the present invention is more convenient to use.

[0018] In this utility model, multiple steam detection components are provided to test the air permeability of the film, making it possible to more intuitively and clearly observe defects on the film, thereby improving the accuracy of defect detection. The multiple steam nozzles can be driven and moved by a drive unit to adjust their total length along the width of the film to accommodate films of different widths, thereby improving versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only 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 1 It is a structural schematic diagram of a light box provided by an embodiment of the utility model.

[0021] Figure 2 It is a structural schematic diagram of a film reeling and unreeling assembly provided by an embodiment of the present utility model.

[0022] Figure 3 This is one of the structural diagrams of the steam detection assembly provided by the embodiment of the present utility model.

[0023] Figure 4 This is the second structural diagram of the steam detection component provided by the embodiment of the present utility model.

[0024] Figure 5 It is a structural schematic diagram of the driving part provided by an embodiment of the utility model.

[0025] Figure 6 It is a structural diagram of the west side light box provided by an embodiment of the present utility model.

[0026] Figure 7 It is a structural schematic diagram of the south side light box provided by an embodiment of the utility model.

[0027] Figure 8 It is a structural schematic diagram of the north side light box provided by an embodiment of the utility model.

[0028] The reference numerals in the figures are:

[0029] 10. Film; 1. Light box; 2. Film unwinding and rewinding assembly; 3. Steam detection assembly; 4. Visual detection assembly; 11. Lamp tube; 21. Unwinding roller; 22. Rewinding roller; 23. Flattening roller; 31. Steam nozzle; 32. Slide rail; 33. Drive unit; 34. Steam generator; 35. Hose; 331. Motor; 332. Screw. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly located on the other element or indirectly located on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device or element must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate relative importance or the number of technical features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined. The following is a more detailed description of the specific implementation of this utility model in conjunction with specific embodiments:

[0034] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 as well as Figure 5 As shown, an embodiment of the present invention provides a film defect detection device 100 for detecting defects in a film 10, comprising a darkroom (not shown), a plurality of light boxes 1, a film reel assembly 2, and a plurality of steam detection assemblies 3; the plurality of light boxes 1 are arranged on the wall of the darkroom to form a lighting field covering the entire darkroom; the film reel assembly 2 is arranged in the darkroom to unfold and move the film 10; each steam detection assembly 3 comprises a steam nozzle 31, a slide rail 32, and a drive unit 33, the length direction of the slide rail 32 is parallel to the width direction of the film 10, the steam nozzle 31 is slidably connected to the slide rail 32, the output end of the drive unit 33 is connected to the steam nozzle 31, and the drive unit 33 can drive the steam nozzle 31 to move along the length direction of the slide rail 32; wherein, the slide rails 32 of the plurality of steam detection assemblies 3 are spaced apart along the length direction of the film 10. Specifically, the plurality of steam nozzles 31 can be arranged according to Figure 3 In the arrangement shown in the figure, during use, the total length of the multiple steam nozzles 31 along the width direction of the film is equal to the width of the film. By adjusting the total length of the multiple steam nozzles 31 along the width direction of the film to adapt to films 10 of different widths, the versatility of the device is improved. The multiple steam nozzles 31 can also be arranged in accordance with Figure 4 Arranged in the manner shown, during use, each section of film 10 moves to above the steam nozzle 31 and remains stationary. At this time, multiple steam nozzles 31 are controlled to move along the slide rail 32 to scan and detect the width direction of the film 31, and the scanning length covers the width of the film.

[0035] like Figure 1 、 Figure 6 、 Figure 7 as well as Figure 8 As shown in FIG. 1 , as one of the optional implementations of this embodiment, the light box 1 includes a west light box 12, a south light box 13, and a north light box 14. Multiple lamp tubes 11 are arranged at intervals on each of the west light box 12, the south light box 13, and the north light box 14. The light sources emitted by the multiple lamp tubes 11 form a lighting field covering the entire darkroom, illuminating the film 10 from different directions to facilitate observation of the entire surface of the film 10.

[0036] As one of the optional implementations of this embodiment, the film unwinding assembly 2 includes an unwinding roller 21, a winding roller 22, and two flattening rollers 23. The two flattening rollers 23 are arranged at intervals between the unwinding roller 21 and the winding roller 22. The unwinding roller 21 is used to unwind the film 10, and the winding roller 22 is used to wind the film 10. Specifically, the unwinding roller 21 is correspondingly connected to the unwinding motor, and the winding roller 22 is correspondingly connected to the winding motor. The unwinding motor can drive the unwinding roller 21 to rotate to release the film 10, and the winding motor can drive the winding roller 22 to rotate to wind the film into a film roll. By simultaneously driving the unwinding roller 21 and the winding roller 22 to rotate, the film 10 can be moved and unfolded.

[0037] As one of the optional implementations of this embodiment, the steam detection assembly 3 further includes a steam generator 34 and a hose 35. The hose 35 connects the steam generator 34 and the steam spray head 31. The steam generator 34 is used to generate steam, which is transported to the steam spray head 31 through the hose 35. The steam spray head 31 sprays the steam. If there is a cavity defect on the film 10, the steam will pass through the film 10 and emerge from the other side of the film 10, where it can be observed by the person being tested.

[0038] As an optional implementation of this embodiment, the film defect detection device further includes a visual detection component 4, which is positioned opposite the steam detection component 3 on either side of the film 10. Specifically, the visual detection component 4 includes a built-in visual detection algorithm, which is well known to those skilled in the art and will not be further described herein. The visual detection component 4 photographs one side of the film 10, uses image recognition to identify the location of defects on the film 10, and then transmits this information to a connected controller to notify the inspector.

[0039] As an optional implementation of this embodiment, the light box 1 includes a plurality of light tubes 11 arranged at intervals.

[0040] As an optional implementation of this embodiment, the lamp tube 11 is a three-wavelength lamp tube.

[0041] As one of the optional implementations of this embodiment, the driving unit 33 includes a motor 331, a screw 332 and a nut (not shown), the nut is fixedly connected to the steam nozzle 31, one end of the screw 332 is threadedly connected to the nut, and the other end of the screw 332 is transmission-connected to the motor 331. Specifically, the motor 331 can drive the screw 332 to rotate, thereby driving the steam nozzle 31 to move along the length direction of the slide rail, thereby adjusting the placement position of the steam nozzle 31. There are multiple steam nozzles 31, and driving the multiple steam nozzles 31 to move can control the total length of the multiple steam nozzles 31 along the width direction of the film 10, thereby adapting to the detection of films of different widths.

[0042] As one of the optional implementations of this embodiment, the steam detection component 3 further includes a controller (not shown), and the plurality of steam detection components are electrically connected to the controller.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A film defect detection device for detecting film defects, characterized in that: include: darkroom; A plurality of light boxes are arranged on the walls of the darkroom to form a lighting field covering the entire darkroom; A film reel assembly is provided in the darkroom and is used to unfold and move the film; Multiple steam detection assemblies, each steam detection assembly includes a steam nozzle, a slide rail, and a drive unit, wherein the length direction of the slide rail is parallel to the width direction of the film, the steam nozzle is slidably connected to the slide rail, the output end of the drive unit is connected to the steam nozzle, and the drive unit is capable of driving the steam nozzle to move along the length direction of the slide rail; Wherein, the slide rails of the plurality of steam detection components are arranged at intervals along the length direction of the film.

2. The thin film defect detection device according to claim 1, wherein: The film unwinding and rewinding assembly includes an unwinding roller, a rewinding roller and two flattening rollers. The two flattening rollers are arranged between the unwinding roller and the rewinding roller. The unwinding roller is used for unwinding the film, and the rewinding roller is used for rewinding the film.

3. The thin film defect detection device according to claim 1, wherein: The steam detection assembly further includes a steam generator and a hose, wherein the hose connects the steam generator and the steam spray head.

4. The thin film defect detection device according to claim 1, wherein: The film defect detection device further includes a visual detection component, which is arranged on two sides of the film opposite to the steam detection component.

5. The thin film defect detection device according to claim 1, wherein: The light box includes a plurality of light tubes arranged at intervals.

6. The thin film defect detection device according to claim 5, wherein: The lamp tube is a three-wavelength lamp tube.

7. The thin film defect detection device according to claim 1, wherein: The driving part includes a motor, a screw and a nut. The nut is fixedly connected to the steam nozzle. One end of the screw is threadedly connected to the nut, and the other end of the screw is transmission-connected to the motor.

8. The thin film defect detection device according to claim 1, wherein: The steam detection component further includes a controller, and the plurality of steam detection components are electrically connected to the controller.

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