Staint detecting and guiding device for sanitary towel finished products

Abstract

The utility model relates to a stain detecting and guiding device for sanitary towel finished products. Comprising a conveying assembly, a detection assembly, a lighting assembly and a sanitary towel to be detected which are arranged on a back plate, the conveying assembly comprises a first conveying belt and a second conveying belt which are rotatably connected to the back plate, and a gap is kept between the first conveying belt and the second conveying belt; to-be-detected sanitary towels are conveyed on the first conveying belt to cross the gap and enter the second conveying belt, the detection assembly comprises a detection head, and the detection head is arranged above the gap and vertically faces the to-be-detected sanitary towels crossing the gap. According to the utility model, the sanitary napkins to be detected pass through the gap between the conveying belts in the conveying process, the illuminating lamp is hit on the sanitary napkins through the upper surface and the lower surface, stains on the sanitary napkins are exposed, and the detection head is used for shooting and collecting the stains, so that the detection of the stains is finally realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of sanitary product production equipment, and particularly relates to a guiding device for detecting stains on finished sanitary napkins. Background Art

[0002] In the current production of sanitary products, especially the production of sanitary napkins, after a series of production processes, quality inspection of the finished sanitary napkins is required. One of the most intuitive inspection data is the detection of stains on the outer surface, such as quality problems that can be directly judged from the appearance, such as stains, misprints, and defects. In the past, such inspections were carried out by manual visual inspection. However, manual visual inspection not only has low efficiency, but also cannot be used to distinguish the internal parts of the sanitary napkin that are not easily visible to the naked eye. Therefore, it is necessary to irradiate the surface of the sanitary napkin with a strong light device to expose the internal stains and defects. Although the strong light can be used to assist in discrimination, the human eye will be damaged after working under strong light for a long time. Summary of the Utility Model

[0003] To solve the above technical problems, the utility model provides a guiding device for detecting stains on finished sanitary napkins. During the conduction of the sanitary napkin to be detected, it crosses the gap between the conveyor belts. The lighting lamps are arranged on the upper and lower surfaces to shine on the sanitary napkin, expose the stains on the sanitary napkin, and collect images through the detection head, ultimately realizing the detection of stains.

[0004] To achieve the above object, the technical solution adopted by the utility model is:

[0005] A guiding device for detecting stains on finished sanitary napkins includes a conveying component, a detecting component, a lighting component, and a sanitary napkin to be detected, which are arranged on a backboard. The conveying component includes a first conveyor belt and a second conveyor belt that are rotatably connected to the backboard. A gap is maintained between the first conveyor belt and the second conveyor belt. The sanitary napkin to be detected is conveyed on the first conveyor belt, crosses the gap, and enters the second conveyor belt. The detecting component includes a detection head, which is arranged above the gap and vertically faces the sanitary napkin to be detected crossing the gap; the upper end surface of the first conveyor belt is higher than the upper end surface of the second conveyor belt.

[0006] The lighting component includes a front lighting lamp, which is arranged above the gap and faces the sanitary napkin to be detected crossing the gap; the front lighting lamp includes two groups, and the two groups of front lighting lamps are located on both sides of the detection head.

[0007] The lighting component further includes a back lighting lamp, which is arranged below the gap. The light of the back lighting lamp passes through the gap and irradiates below the sanitary napkin to be detected; the back lighting lamp and the two groups of front lighting lamps are distributed in a triangular shape around the sanitary napkin to be detected.

[0008] For the sanitary napkin finished product stain detection and conveying device adopting this structure, the sanitary napkin to be detected is conveyed through the first conveyor belt. In order to detect during continuous conveying, strong light needs to be projected onto the sanitary napkin to be detected to highlight stains. At the same time, video collection is carried out on the sanitary napkin to be detected through the detection head. The strong light is set by two groups of front lighting lamps symmetrically distributed left and right with the detection head as the center of symmetry. The two groups of front lighting lamps are inclined and projected onto the sanitary napkin to be detected. While completing the lighting of the sanitary napkin to be detected, it will not affect the video collection effect of the detection head directly above. During the high-speed operation of the first conveyor belt, stain information on the sanitary napkin to be detected can be continuously collected.

[0009] However, the front lighting lamp can only be projected onto the upper surface of the sanitary napkin to be detected. Especially for the sanitary napkin on the first conveyor belt, since the first conveyor belt on the back is a solid background and is opaque, the strong light cannot penetrate, resulting in the inability to highlight the defects in its deep interior. To solve this problem, the back of the sanitary napkin to be detected needs to be hollowed out, and strong light is projected from below upwards. Therefore, a second conveyor belt is set up. The detection head is located in the gap between the first conveyor belt and the second conveyor belt. The sanitary napkin to be detected crosses the gap under the conveyance of the first conveyor belt and enters the second conveyor belt. Below the gap, a back lighting lamp is set up to project strong light from below upwards onto the back of the sanitary napkin to be detected, so that the existing defects inside can be highlighted for the detection head to carry out video collection. Therefore, the two groups of front lighting lamps and the back lighting lamp are distributed in a triangle around the sanitary napkin to be detected to achieve the most efficient stain detection.

[0010] Since the sanitary napkin to be detected needs to cross the gap to achieve stain detection, although under the high-speed conveyance of the first conveyor belt, the sanitary napkin to be detected can cross the gap by inertia and be continuously driven by the second conveyor belt to carry out the next process, it is difficult to ensure that the sanitary napkin to be detected sent out from the first conveyor belt can smoothly enter the second conveyor belt at a low speed. Therefore, the upper end surface of the first conveyor belt is set higher than the upper end surface of the second conveyor belt to ensure that the sanitary napkin to be detected will not fall out during the conveyance process.

[0011] Compared with the prior art, the advantages of the present utility model are as follows: Through the front lighting lamp and the back lighting lamp distributed in a triangle, when the sanitary napkin to be detected crosses the gap between the first conveyor belt and the second conveyor belt, stains and defects on the sanitary napkin to be detected can be highlighted under the irradiation of strong light on the front and back, so as to identify the sanitary napkins with quality problems during the video collection of the detection head. Description of the Drawings

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 is the top perspective view of the present invention;

[0014] Figure 2 is the bottom perspective view of the present invention;

[0015] Figure 3 is the front view of the present invention.

[0016] Wherein: 1, back plate; 2, conveying assembly; 21, first conveyor belt; 22, second conveyor belt; 23, gap; 3, detection assembly; 31, detection head; 4, lighting assembly; 41, front lighting lamp; 42, back lighting lamp; 5, sanitary napkin to be detected. Detailed implementation manners

[0017] To make the purpose, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present invention.

[0018] The following will describe the detailed implementation manners of the present invention in conjunction with the drawings:

[0019] As Figures 1 - 3 shown, a sanitary napkin finished product stain detection and guiding device includes a conveying assembly 2, a detection assembly 3, a lighting assembly 4 and a sanitary napkin 5 to be detected arranged on a back plate 1. The conveying assembly 2 includes a first conveyor belt 21 and a second conveyor belt 22 rotatably connected to the back plate 1. A gap 23 is maintained between the first conveyor belt 21 and the second conveyor belt 22. The sanitary napkin 5 to be detected is conveyed on the first conveyor belt 21 across the gap 23 and enters the second conveyor belt 22. The detection assembly 3 includes a detection head 31. The detection head 31 is arranged above the gap 23 and vertically faces the sanitary napkin 5 to be detected crossing the gap 23; the upper end surface of the first conveyor belt 21 is higher than the upper end surface of the second conveyor belt 22.

[0020] The lighting assembly 4 includes a front lighting lamp 41 which is located above the gap 23 and faces the sanitary napkin 5 to be detected across the gap 23; the front lighting lamp 41 includes two groups, and the two groups of front lighting lamps 41 are located on both sides of the detection head 31.

[0021] The lighting assembly 4 further includes a back lighting lamp 42 which is located below the gap 23, and the light of the back lighting lamp 42 irradiates below the sanitary napkin 5 to be detected after passing through the gap 23; the back lighting lamp 42 and the two groups of front lighting lamps 41 are distributed in a triangular shape around the sanitary napkin 5 to be detected.

[0022] Description of the working mode of the present utility model:

[0023] For the sanitary napkin finished product stain detection and conveying device adopting this structure, the sanitary napkin 5 to be detected is conveyed by the first conveyor belt 21. In order to detect during the continuous conveying process, strong light needs to be projected onto the sanitary napkin 5 to be detected to highlight the stains. At the same time, through the camera acquisition on the sanitary napkin 5 by the detection head 31, the strong light is set by arranging two groups of front lighting lamps 41 symmetrically left and right with the detection head 31 as the symmetry center. The two groups of front lighting lamps 41 are obliquely projected onto the sanitary napkin 5 to complete the lighting of the sanitary napkin 5 to be detected without affecting the camera acquisition effect of the detection head 31 directly above. During the high-speed operation of the first conveyor belt 21, the stain information on the sanitary napkin 5 to be detected can be continuously collected.

[0024] However, the front lighting lamp 41 can only project onto the upper surface of the sanitary napkin 5 to be detected. Especially for the sanitary napkin 5 on the first conveyor belt 21, since the first conveyor belt 21 on the back is a solid background and is opaque, the strong light cannot penetrate, resulting in the inability to highlight the defects in its deep interior. To solve this problem, the back of the sanitary napkin 5 to be detected needs to be hollowed out, and strong light is projected from below to irradiate from bottom to top. Therefore, a second conveyor belt 22 is provided, and the detection head 31 is located in the gap 23 remaining between the first conveyor belt 21 and the second conveyor belt 22. The sanitary napkin 5 to be detected crosses the gap 23 under the conveyance of the first conveyor belt 21 and enters the second conveyor belt 22. A back lighting lamp 42 is provided below the gap 23 to project strong light from bottom to top onto the back of the sanitary napkin 5 to be detected, so that the existing defect conditions inside can be highlighted for the detection head 31 to perform camera acquisition. Therefore, the two groups of front lighting lamps 41 and the back lighting lamp 42 are distributed in a triangular shape around the sanitary napkin 5 to be detected to achieve the most efficient stain detection.

[0025] Since the sanitary napkin 5 to be detected needs to cross the gap 23 to achieve stain detection, although under the high-speed conveyance of the first conveyor belt 21, the sanitary napkin 5 to be detected can cross the gap 23 by inertia and be continuously driven by the second conveyor belt 22 to carry out the next process, it is difficult to ensure that the sanitary napkin 5 sent out from the first conveyor belt 21 can smoothly enter the second conveyor belt 22 under low-speed conditions. Therefore, the upper end surface of the first conveyor belt 21 is set higher than the upper end surface of the second conveyor belt 22, so as to ensure that the sanitary napkin 5 to be detected will not fall out during the conveyance process. At the same time, both the first conveyor belt 21 and the second conveyor belt 22 are rotatably connected to the back plate 1, so the angular adjustment of the two can be carried out to change the drop from the first conveyor belt 21 to the second conveyor belt 22, ensuring that the sanitary napkin 5 to be detected will not fall out during the conveyance process.

[0026] The beneficial effect of the present utility model lies in that: through the front illuminating lamp 41 and the back illuminating lamp 42 distributed in a triangular shape, when the sanitary napkin 5 to be detected crosses the gap 23 between the first conveyor belt 21 and the second conveyor belt 22, the stains and defects on the sanitary napkin 5 to be detected can be highlighted under the strong light irradiation on the front and back, so as to identify the sanitary napkins with quality problems in the camera acquisition of the detection head 31.

[0027] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A device for detecting and guiding stains on finished sanitary napkin products, characterized in that: The invention comprises a conveying assembly, a detection assembly, a lighting assembly and a sanitary napkin to be detected which are arranged on a back plate. The conveying assembly comprises a first conveyor belt and a second conveyor belt which are rotatably connected to the back plate. A gap is maintained between the first conveyor belt and the second conveyor belt. The sanitary napkin to be detected is conveyed on the first conveyor belt across the gap and enters the second conveyor belt. The detection assembly comprises a detection head which is arranged above the gap and vertically faces the sanitary napkin to be detected which has crossed the gap.

2. The device for detecting and guiding stains on finished sanitary napkins according to claim 1, characterized in that: The upper end surface of the first conveyor belt is higher than the upper end surface of the second conveyor belt.

3. The device for detecting and guiding stains on finished sanitary napkins according to claim 1, characterized in that: The lighting assembly includes a front lighting lamp, which is located above the gap and faces the sanitary napkin to be inspected that crosses the gap.

4. The device for detecting and guiding stains on finished sanitary napkins according to claim 3, characterized in that: The front lighting lamps include two groups, and the two groups of front lighting lamps are located on both sides of the detection head.

5. The device for detecting and guiding stains on finished sanitary napkins according to claim 4, characterized in that: The lighting assembly also includes a back lighting lamp, which is located below the gap. The light of the back lighting lamp passes through the gap and shines below the sanitary napkin to be inspected.

6. The device for detecting and guiding stains on finished sanitary napkins according to claim 5, characterized in that: The back lighting lamps and two groups of front lighting lamps are distributed in a triangular shape around the sanitary napkin to be inspected.

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