Visual detection system for defects of membrane cloth

Abstract

The utility model discloses a film cloth defect visualization detection system which comprises a film cloth conveying mechanism and a light transmission detection structure, the film cloth conveying mechanism comprises a traction roller and a damping roller which are rotationally assembled on a production line rack, a film cloth conveying channel is formed between the traction roller and the damping roller, and the light transmission detection structure is installed on the lower side of the film cloth conveying channel; the light-transmitting detection structure comprises a main frame, a black bottom plate and a light-transmitting plate, the black bottom plate is installed on the lower side of the main frame, the light-transmitting plate is installed on the upper side of the main frame, and a first light-emitting source and a second light-emitting source are further fixedly installed in the main frame; the first light-emitting source and the second light-emitting source are oppositely arranged on the outer side of the light-transmitting plate, the illumination directions of the first light-emitting source and the second light-emitting source are parallel to the surface of the light-transmitting plate, and a light-emitting cavity with the periphery and the bottom closed and the upper light-transmitting portion is formed in the main frame. The black bottom plate can serve as a black background at the bottom of the main frame, and quality defects such as wrinkles, impurities and holes of the film cloth can be highlighted.

Description

Technical Field

[0001] The utility model relates to the technical field of facial mask production, in particular to a visual detection system for film cloth defects. Background Art

[0002] Sheet masks are a common skincare and beauty product. Their base fabric is made from non-woven fabric, cotton fiber, silk fiber, or biofiber. Furthermore, they contain essence, which effectively penetrates the skin when applied, providing moisturizing, hydrating, cleansing, and nourishing benefits.

[0003] In the production of facial masks, it is necessary to test the quality of the raw materials of the membrane cloth. For reference, the Chinese utility model patent with authorization announcement number CN212568529U and authorization announcement date of 2021.02.19 discloses a fabric testing platform for detecting detergent residues on fabrics. Specifically, it includes a storage cabinet, a plurality of lifting columns are provided on the top of the storage cabinet, a bottom plate is provided on the top of the storage cabinet, the top of the lifting columns and the bottom of the bottom plate overlap each other, so that a certain space is formed between the bottom plate and the storage cabinet; an electrical connection board is connected to the top of the storage cabinet, a plurality of LED light tubes are provided on the electrical connection board, a handle is connected to the front of the electrical connection board, and a light-transmitting plate is embedded in the interior of the bottom plate. The fabric to be tested is spread flat on the light-transmitting plate, and a plurality of LED light tubes located below are turned on, and the light is irradiated on the fabric through the light-transmitting plate to increase the observation effect of the fabric.

[0004] Existing fabric inspection platforms are designed with a light-transmitting plate, an electrical connection board, and LED lights. These monitor the brightness of the membrane fabric. However, the LED lights' uneven light distribution beneath the membrane fabric and the lack of a clear background reference make it difficult to efficiently and quickly detect quality defects such as wrinkles, impurities, and holes in the membrane fabric on automated production lines. Utility Model Content

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the utility model provides a visual detection system for membrane cloth defects, which solves the problem that it is difficult to efficiently and quickly detect quality defects such as wrinkles, impurities and holes in the membrane cloth on an automated production line due to the uneven light distribution of the LED lamp tube under the membrane cloth and the lack of obvious background reference.

[0007] (2) Technical solution

[0008] The utility model provides the following technical solutions:

[0009] The membrane cloth defect visualization detection system includes a membrane cloth conveying mechanism and a light transmission detection structure. The membrane cloth conveying mechanism includes a traction roller and a damping roller rotatably assembled on the production line frame, and a membrane cloth conveying channel is formed between the traction roller and the damping roller. The light transmission detection structure is installed on the lower side of the membrane cloth conveying channel.

[0010] The light transmission detection structure includes a main frame, a black bottom plate and a light transmission plate, wherein the black bottom plate is mounted on the lower side of the main frame, and the light transmission plate is mounted on the upper side of the main frame. A first light source and a second light source are also fixedly mounted inside the main frame;

[0011] The first light source and the second light source are relatively arranged on the outside of the light-transmitting plate, and the lighting directions of the first light source and the second light source are arranged parallel to the surface of the light-transmitting plate. A light-emitting cavity is formed inside the main frame, which is closed on all sides and at the bottom and transparent on the top.

[0012] Preferably, the main frame is a square frame, which includes two parallel and spaced transverse beams and two parallel and spaced longitudinal beams. The transverse beams are fixedly connected to the longitudinal beams, and the first light source and the second light source are respectively installed on the inner sides of the two transverse beams.

[0013] Preferably, the cross-sectional profile of the transverse beam is the same as the cross-sectional profile of the longitudinal beam, and the transverse beam includes vertical side panels, upper wing panels and lower wing panels, the upper wing panels are fixedly connected to the upper edges of the vertical side panels, the lower wing panels are fixedly connected to the lower edges of the vertical side panels, and the upper wing panels protrude inwardly and are arranged above the first light source and the second light source.

[0014] Preferably, the inward protrusion distance of the upper wing plate relative to the first light source or the second light source is any size between 50 mm and 160 mm.

[0015] Preferably, the first light source and the second light source are both LED parallel light sources, and the LED parallel light sources are arranged to fit on the inner wall of the vertical side plate of the transverse beam.

[0016] Preferably, the light-transmitting plate is a transparent acrylic plate or a transparent glass plate, and the light-transmitting plate is fixedly connected to the upper side of the upper wing plate of the transverse beam and the upper side of the upper wing plate of the longitudinal beam.

[0017] Preferably, reflectors are respectively provided on the inner sides of the two longitudinal beams, and the reflectors are attached to the inner walls of the vertical side plates of the longitudinal beams.

[0018] Preferably, the black bottom plate has a black frosted surface, and the black bottom plate is fixedly connected to the lower side of the upper wing plate of the transverse beam and the lower side of the upper wing plate of the longitudinal beam.

[0019] Preferably, the traction roller is a pair of traction rollers, which are installed on a production line frame and are connected to a drive motor, and the membrane cloth conveying channel and the axial gap between the pair of traction rollers are arranged correspondingly.

[0020] Preferably, the damping roller is a damping pair of rollers, and a roller support is provided at the end of the damping pair of rollers. An adjusting screw is connected between the roller support and the production line frame, and the axial direction of the adjusting screw is extended perpendicular to the membrane cloth conveying channel.

[0021] (3) Beneficial effects

[0022] Compared with the existing technology, the present invention provides a visual detection system for membrane cloth defects, which has the following beneficial effects:

[0023] The membrane cloth defect visualization detection system adopts the design form of a membrane cloth conveying mechanism and a light-transmitting detection structure, wherein the membrane cloth conveying mechanism includes a traction roller and a damping roller rotatably assembled on the production line frame. The traction roller is used to traction and convey the membrane cloth, and the damping roller generates a damping force on the membrane cloth during the conveying process, ensuring that the traction roller and the damping roller maintain tension in conveying the membrane cloth. The light-transmitting detection structure is installed on the lower side of the membrane cloth conveying channel, thereby ensuring that the membrane cloth is conveyed in a uniformly spread state above the light-transmitting detection structure.

[0024] The light transmission detection structure includes a main frame, a black base plate, and a light-transmitting plate. The black base plate is mounted on the lower side of the main frame, and the light-transmitting plate is mounted on the upper side of the main frame. A first light source and a second light source are also fixedly mounted inside the main frame, forming a light-emitting cavity within the main frame that is closed on all sides and at the bottom, and transparent at the top. The first light source and the second light source each emit illumination light in opposite directions from the inner side of the main frame. Both illumination lights are arranged parallel to the surface of the light-transmitting plate, preventing the light from the two light sources from directly impinging on the light-transmitting plate and ensuring uniform light intensity distribution.

[0025] In addition, the black base plate at the bottom of the main frame can be used as a black background. Compared with only using lighting to detect the membrane cloth, the combination of the light-emitting cavity and the black background can highlight the quality defects of the membrane cloth such as wrinkles, impurities and holes, meeting the requirements of efficient and rapid detection of membrane cloth in automated production lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the main view of the membrane cloth defect visualization detection system in a specific embodiment of the present invention;

[0027] Figure 2 It is a partial cross-sectional view of the light transmission detection structure in a specific embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the assembly of the damping roller and the production line frame in a specific embodiment of the utility model.

[0029] In the figure: 1-traction roller, 10-membrane cloth conveying channel, 11-drive motor, 2-damping roller, 20-roller support, 21-ear plate, 22-adjusting screw, 3-main frame, 31-first light source, 32-second light source, 33-transverse beam, 34-longitudinal beam, 35-reflector, 330-vertical side plate, 331-upper wing plate, 332-lower wing plate, 4-black bottom plate, 5-light-transmitting plate, 6-production line frame. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The specific embodiment of the membrane cloth defect visualization detection system of the present invention is as follows: Figures 1 to 3 As shown, the film cloth defect visualization detection system includes a film cloth conveying mechanism and a light transmission detection structure. The film cloth conveying mechanism includes a traction roller 1 and a damping roller 2 rotatably assembled on the production line frame 6. A film cloth conveying channel 10 is formed between the traction roller 1 and the damping roller 2. The light transmission detection structure is installed on the lower side of the film cloth conveying channel 10. The light transmission detection structure includes a main frame 3, a black base plate 4 and a light transmission plate 5.

[0032] The black base plate 4 is installed on the lower side of the main frame 3, and the light-transmitting plate 5 is installed on the upper side of the main frame 3. The first light source 31 and the second light source 32 are also fixedly installed inside the main frame 3; the first light source 31 and the second light source 32 are relatively arranged on the outside of the light-transmitting plate 5, and the lighting directions of the first light source 31 and the second light source 32 are arranged parallel to the surface of the light-transmitting plate 5. A light-emitting cavity is formed inside the main frame 3, which is closed on all sides and at the bottom and transparent on the top.

[0033] The membrane cloth defect visualization detection system adopts the design form of a membrane cloth conveying mechanism and a light-transmitting detection structure, wherein the membrane cloth conveying mechanism includes a traction roller 1 and a damping roller 2 rotatably assembled on the production line frame 6. The traction roller 1 is used to traction and convey the membrane cloth, and the damping roller 2 generates a damping force on the membrane cloth during the conveying process, ensuring that the traction roller 1 and the damping roller 2 maintain tension in conveying the membrane cloth. The light-transmitting detection structure is installed on the lower side of the membrane cloth conveying channel 10, thereby ensuring that the membrane cloth is conveyed in a uniformly spread state above the light-transmitting detection structure.

[0034] Since the light transmission detection structure includes a main frame 3, a black base plate 4, and a light-transmitting plate 5, with the black base plate 4 mounted on the lower side of the main frame 3 and the light-transmitting plate 5 mounted on the upper side of the main frame 3, a first light source 31 and a second light source 32 are also fixedly mounted inside the main frame 3, forming a light-emitting cavity within the main frame 3 that is closed on all sides and at the bottom and transparent at the top. The first light source 31 and the second light source 32 each emit illumination light in opposite directions from the inner side of the main frame 3. Both illumination lights are arranged parallel to the surface of the light-transmitting plate 5, preventing the illumination from the two light sources from directly impinging on the light-transmitting plate 5 and ensuring uniform light intensity distribution.

[0035] In addition, the black base plate 4 at the bottom of the main frame 3 can be used as a black background. Compared with only using a lighting lamp to detect the membrane cloth, the combination of the light-emitting cavity and the black background can highlight the quality defects of the membrane cloth such as wrinkles, impurities and holes, meeting the requirements of efficient and rapid detection of membrane cloth in the automated production line.

[0036] In this embodiment, the main frame 3 is a square frame, which includes two parallel and spaced transverse beams 33 and two parallel and spaced longitudinal beams 34. The transverse beams 33 are fixedly connected to the longitudinal beams 34, and the first light source 31 and the second light source 32 are respectively installed on the inner sides of the two transverse beams 33. Specifically, the transverse beams 33 of the main frame 3 are arranged along the width direction of the membrane cloth conveying channel 10, and the longitudinal beams 34 are arranged along the length direction of the membrane cloth conveying channel 10. The first light source 31 and the second light source 32 are respectively installed on the inner sides of the two transverse beams 33. When a staff member stands outside the membrane cloth conveying channel 10 for observation, the human eye is prevented from directly seeing the first light source 31 or the second light source 32.

[0037] As a further preferred embodiment, the cross-sectional profile of the transverse beam 33 is identical to that of the longitudinal beam 34. The transverse beam 33 includes vertical side panels 330, an upper wing panel 331, and a lower wing panel 332. The upper wing panel 331 is fixedly connected to the upper edge of the vertical side panels 330, and the lower wing panel 332 is fixedly connected to the lower edge of the vertical side panels 330. The upper wing panel 331 protrudes inwardly and is disposed above the first and second light sources 31, 32. The inward protrusion of the upper wing panel 331 of the transverse beam 33 effectively shields the first and second light sources 31, 32, preventing uneven brightness caused by the two light sources directly irradiating upward.

[0038] Specifically, the inward protrusion distance of the upper wing plate 331 relative to the first light source 31 or the second light source 32 is any dimension between 50 mm and 160 mm. It should be noted that both the first light source 31 and the second light source 32 are LED parallel light sources, and the LED parallel light sources are attached to the inner wall of the vertical side plate 330 of the transverse beam 33. The light-transmitting plate 5 is a transparent acrylic plate or a transparent glass plate, and is fixedly connected to the upper side of the upper wing plate 331 of the transverse beam 33 and the upper side of the upper wing plate 331 of the longitudinal beam 34.

[0039] In this embodiment, reflectors 35 are also provided on the inner sides of the two longitudinal beams 34. These reflectors 35 are attached to the inner walls of the vertical side panels 330 of the longitudinal beams 34. The two longitudinally arranged reflectors 35 create reflective areas on the two longitudinal beams 34, enhancing the localized brightness of the longitudinal beams 34 while ensuring uniform illumination within the light-emitting cavity. The black base plate 4 has a matte black surface that prevents reflections from glossy surfaces. The black base plate 4 is fixedly connected to the underside of the upper wing plate 331 of the transverse beam 33 and the underside of the upper wing plate 331 of the longitudinal beam 34.

[0040] In addition, the traction roller 1 is a pair of traction rollers, which are mounted on the production line frame 6 and are connected to the drive motor 11. The axial gap between the film cloth conveying channel 10 and the traction roller pair is arranged accordingly. Moreover, the damping roller 2 is a pair of damping rollers, and a roller support 20 is provided at the end of the damping roller. An adjusting screw 22 is connected between the roller support 20 and the production line frame 6. The axial direction of the adjusting screw 22 extends perpendicular to the film cloth conveying channel 10. Specifically, ear plates 21 are fixedly provided on both sides of the roller support 20. The ear plates 21 have threaded holes. The adjusting screw 22 is assembled in the threaded holes of the ear plates 21. The lower end of the adjusting screw 22 is rotatably connected to the production line frame 6. The gap distance between the damping rollers can be fine-tuned by operating the adjusting screw 22. By changing the extrusion force generated by the damping roller on the film cloth, the rotation damping of the damping roller can be adjusted.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0042] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A membrane cloth defect visualization detection system, characterized in that: The invention comprises a film cloth conveying mechanism and a light transmission detection structure, wherein the film cloth conveying mechanism comprises a traction roller (1) and a damping roller (2) rotatably mounted on a production line frame (6), a film cloth conveying channel (10) is formed between the traction roller (1) and the damping roller (2), and the light transmission detection structure is installed on the lower side of the film cloth conveying channel (10); The light transmission detection structure comprises a main frame (3), a black base plate (4) and a light transmission plate (5), wherein the black base plate (4) is mounted on the lower side of the main frame (3), and the light transmission plate (5) is mounted on the upper side of the main frame (3); a first light source (31) and a second light source (32) are also fixedly mounted inside the main frame (3); The first light source (31) and the second light source (32) are relatively arranged on the outside of the light-transmitting plate (5), and the illumination directions of the first light source (31) and the second light source (32) are arranged parallel to the surface of the light-transmitting plate (5). A light-emitting cavity is formed inside the main frame (3), which is closed on all sides and at the bottom and transparent on the top.

2. The membrane cloth defect visualization detection system according to claim 1, characterized in that: The main frame (3) is a square frame, comprising two parallel and spaced transverse beams (33) and two parallel and spaced longitudinal beams (34), wherein the transverse beams (33) are fixedly connected to the longitudinal beams (34), and the first light source (31) and the second light source (32) are respectively installed on the inner sides of the two transverse beams (33).

3. The membrane cloth defect visualization detection system according to claim 2, characterized in that: The cross-sectional profile of the transverse beam (33) is the same as that of the longitudinal beam (34). The transverse beam (33) includes a vertical side plate (330), an upper wing plate (331) and a lower wing plate (332). The upper wing plate (331) is fixedly connected to the upper edge of the vertical side plate (330), and the lower wing plate (332) is fixedly connected to the lower edge of the vertical side plate (330). The upper wing plate (331) protrudes inward and is arranged above the first light source (31) and the second light source (32).

4. The membrane cloth defect visualization detection system according to claim 3, characterized in that: The inward protrusion distance of the upper wing plate (331) relative to the first light source (31) or the second light source (32) is any size between 50 mm and 160 mm.

5. The membrane cloth defect visualization detection system according to claim 3, characterized in that: The first light source (31) and the second light source (32) are both LED parallel light sources, and the LED parallel light sources are arranged to fit the inner wall of the vertical side plate (330) of the transverse beam (33).

6. The membrane cloth defect visualization detection system according to claim 3, characterized in that: The light-transmitting plate (5) is a transparent acrylic plate or a transparent glass plate, and the light-transmitting plate (5) is fixedly connected to the upper side of the upper wing plate (331) of the transverse beam (33) and the upper side of the upper wing plate (331) of the longitudinal beam (34).

7. The membrane cloth defect visualization detection system according to claim 3, characterized in that: Reflectors (35) are also provided on the inner sides of the two longitudinal beams (34), respectively. The reflectors (35) are arranged in close contact with the inner walls of the vertical side plates (330) of the longitudinal beams (34).

8. The membrane cloth defect visualization detection system according to claim 3, characterized in that: The black bottom plate (4) has a black frosted surface, and the black bottom plate (4) is fixedly connected to the lower side of the upper wing plate (331) of the transverse beam (33) and the lower side of the upper wing plate (331) of the longitudinal beam (34).

9. The membrane cloth defect visualization detection system according to claim 1, characterized in that: The traction roller (1) is a pair of traction rollers, which are mounted on a production line frame (6) and are connected to a drive motor (11) in a transmission manner. The film cloth conveying channel (10) and the axial gap between the pair of traction rollers are arranged correspondingly.

10. The membrane cloth defect visualization detection system according to claim 1, characterized in that: The damping roller (2) is a damping roller pair, and a roller support (20) is provided at the end of the damping roller pair. An adjusting screw (22) is connected between the roller support (20) and the production line frame (6), and the axial direction of the adjusting screw (22) is perpendicular to the membrane cloth conveying channel (10).

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