Surface damage detection equipment for sanitary towel production

Abstract

The utility model relates to the field of sanitary napkin production, in particular to surface damage detection equipment for sanitary napkin production, which comprises a first conveying device and a second conveying device. One side of the first conveying device and one side of the second conveying device are each provided with a material removing mechanism, the other side of the first conveying device and the other side of the second conveying device are each provided with a material collecting frame corresponding to the material removing mechanisms, and the first conveying device and the second conveying device are arranged in a staggered mode; a material turning device is installed at the end, close to the second conveying device, of the first conveying device. After single-face detection of the sanitary napkins on the first conveying device is completed, the turnover plate assembly achieves turnover operation of the sanitary napkins and is matched with the telescopic rod assembly to accurately push the turned sanitary napkins to the second conveying device for other-face detection, so that double-face detection of the sanitary napkins is achieved, the detection comprehensiveness is improved, and meanwhile the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of sanitary napkin production, in particular to a surface damage detection device for sanitary napkin production. Background Art

[0002] Sanitary napkins are personal hygiene products used by women during menstruation. They are primarily made from materials such as cotton, non-woven fabrics, paper pulp, or composites of these materials, and high-molecular-weight absorbent resins. Their primary function is to absorb menstrual blood, maintaining the cleanliness and comfort of the female private area. Sanitary napkins require damage inspection during the production process. Surface damage can lead to leakage or breakage during use, causing inconvenience and embarrassment to consumers. Therefore, damage inspection during the production process can promptly detect and eliminate defective products, ensuring that only qualified products enter the market.

[0003] Regarding the above-mentioned related technologies, the inventors found that some existing sanitary napkin surface damage detection equipment can only perform single-sided inspection during the visual inspection of sanitary napkins. However, sanitary napkins may be damaged on both sides due to various reasons during the production process. Therefore, only inspecting one side may not be able to fully detect all damage problems, resulting in missed inspections. In order to improve the inspection quality and ensure the comprehensiveness of the inspection, operators need to turn the sanitary napkins over, which not only increases their workload, but also affects the inspection efficiency. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a surface damage detection device for sanitary napkin production, which is convenient for double-sided detection of sanitary napkins, improves detection quality, reduces the workload of operators, and improves detection efficiency.

[0005] To solve the above technical problems, the present invention adopts a technical solution: providing a surface damage detection device for sanitary napkin production, comprising: a first conveyor device and a second conveyor device, wherein a visual detection device is mounted on each of the first conveyor device and the second conveyor device, a material removal mechanism is mounted on one side of each of the first conveyor device and the second conveyor device, and a material collection frame corresponding to the material removal mechanism is placed on the other side of each of the first conveyor device and the second conveyor device, wherein the first conveyor device and the second conveyor device are staggered, and a material turning device is mounted on the end of the first conveyor device close to the second conveyor device;

[0006] The turning device includes a bracket, the top of the bracket is connected to a flip assembly, the side of the bracket away from the second conveying device is connected to a telescopic rod assembly, and the other side is connected to a driving device for driving the flip assembly to rotate, and the telescopic rod assembly is suitable for pushing the turned material onto the second conveying device.

[0007] By adopting the above technical solution, the visual inspection equipment performs visual inspection on the surfaces of the sanitary napkins on the first conveyor device and the second conveyor device respectively, identifies defects such as damage and stains, and with the cooperation of the material removal mechanism and the collection frame, removes the unqualified sanitary napkins from the conveyor device, thereby improving the overall quality of the product. After the sanitary napkin on the first conveyor device completes the single-sided inspection, the flip plate assembly realizes the flipping operation of the sanitary napkin, and cooperates with the telescopic rod assembly to accurately push the flipped sanitary napkin to the second conveyor device for inspection on the other side, so as to realize double-sided inspection of the sanitary napkin, improve the comprehensiveness of the inspection, and improve the inspection efficiency at the same time.

[0008] In a preferred example, the present invention can be further configured as follows: the flip assembly includes a photoelectric sensor and a rotating shaft rotatably connected to the top of the bracket, the surface of the rotating shaft has four flips in a circular array, the output end of the driving device is connected to the rotating shaft, when the driving device drives the rotating shaft to rotate, the upper surfaces of the two symmetrical flips are respectively in the same plane with the top of the first conveying device and the second conveying device, when the flips are in a horizontal state, one of the flips is set close to the first conveying device, and the end of the other flip close to the rotating shaft coincides with one end of the second conveying device.

[0009] By adopting the above technical solution, the photoelectric sensor is used to detect whether the sanitary napkin conveyed by the first conveying device has reached the predetermined position of the flip plate assembly. When the sanitary napkin reaches the predetermined position, the photoelectric sensor sends a signal to trigger the driving device to start working, so that the driving device drives the rotating shaft to rotate to realize the flipping action of the flip plate, so that the sanitary napkin can smoothly transition from the first conveying device to the flip plate, and then from the flip plate to the second conveying device, thereby realizing the automatic flipping of the flip plate, reducing manual intervention, and improving the degree of automation of the equipment.

[0010] In a preferred example, the present invention can be further configured as follows: a pusher assembly is mounted on the top of the first conveying device near the second conveying device, and the pusher assembly includes symmetrically arranged mounting plates, and a rotating shaft 2 is rotatably connected between the tops of the mounting plates, and a surface annular array of the rotating shaft 2 has several rotating pusher plates, and one of the mounting plates is equipped with a driving device 2 for driving the rotating shaft 2 to rotate, and an inner bottom end of one of the mounting plates is connected to a photoelectric sensor 2, and the photoelectric sensor 2 is arranged close to the visual detection equipment.

[0011] By adopting the above technical solution, after the sanitary napkin on the first conveying device completes the single-sided inspection, the sanitary napkin is transported by the first conveying device, and after moving to the area corresponding to the photoelectric sensor 2, the photoelectric sensor 2 detects whether the sanitary napkin has reached the predetermined position of the pushing assembly. When the sanitary napkin reaches the predetermined position and has completed the visual inspection, the photoelectric sensor 2 sends a signal, triggering the drive device 2 to drive the rotating shaft 2 to rotate, so that the sanitary napkin can be smoothly and accurately transferred from the first conveying device to the flip assembly.

[0012] In a preferred example, the present invention can be further configured as follows: the flip plate assembly also includes two semicircular protective plates, which are respectively mounted on both ends of the rotating shaft and fixedly connected to the inner side of the bracket, and the arc-shaped ends of the semicircular protective plates are arranged close to the first conveying device, and the photoelectric sensor is installed on the inner side of one of the semicircular protective plates and is located above the flip plate in a horizontal state.

[0013] By adopting the above technical solution, when the sanitary napkin is conveyed to the predetermined position of the flap assembly, the photoelectric sensor 1 can detect the presence of the sanitary napkin and trigger the driving device to start working, driving the rotating shaft 1 to rotate, thereby realizing the flipping action of the flap. At this time, the semicircular protective plate plays a protective role when the sanitary napkin transitions from the first conveying device to the flap, to ensure that the sanitary napkin falls on the flap smoothly and accurately to avoid dislocation or falling.

[0014] In a preferred example, the present invention can be further configured as follows: the telescopic rod assembly includes a connecting plate and an electric push rod installed thereon, the protruding end of the electric push rod is connected to a push plate, and the bottom of the push plate is located above the flip plate in a horizontal state and is arranged close to the flip plate.

[0015] By adopting the above technical solution, when the driving rotating shaft rotates to realize the flipping action of the flap, the electric push rod drives the push plate to move, pushing the sanitary napkin to the second conveying device for transmission detection.

[0016] In a preferred example, the present invention can be further configured as follows: the material-picking mechanism includes a mounting side plate, an electric push rod 2 is passed through the mounting side plate, one end of the electric push rod 2 is connected to a material-picking plate, the bottom of the material-picking plate is located above the first conveying device and is arranged close to the top thereof, and a photoelectric sensor 3 is also installed on the side of the mounting side plate close to the material collection frame, and the photoelectric sensor 3 is arranged close to the corresponding visual detection equipment and close to the reference plane at the top of the first conveying device.

[0017] By adopting the above technical solution, photoelectric sensor three is used to detect whether the sanitary napkin has reached the predetermined position of the material removal mechanism and whether the visual inspection has been completed. When the sanitary napkin reaches the predetermined position and is judged to be unqualified, photoelectric sensor three sends a signal, triggering electric push rod two to extend, driving the material removal plate to remove the detected unqualified sanitary napkin from the first conveying device and push it into the collection frame, avoiding the mixing of unqualified products and improving the overall quality of the product.

[0018] In a preferred example, the present invention can be further configured as follows: the first conveying device includes a mounting frame and a conveyor belt, one end of the mounting frame is rotatably connected to a driving wheel, and the other end is rotatably connected to a driven wheel, the driving wheel and the driven wheel are respectively engaged with the conveyor belt, and a plurality of auxiliary rollers rotatably connected to the mounting frame are arranged between the driving wheel and the driven wheel, and the auxiliary rollers are respectively in rolling contact with the inner side of the conveyor belt, and one side of the end of the mounting frame is connected to a driving motor, and the output shaft of the driving motor is connected to the driving wheel.

[0019] By adopting the above technical solution, the driving motor 1 is connected to the driving wheel 1 through the output shaft, providing power for the conveyor belt 1, so that the first conveying device can realize continuous and smooth transmission of materials through the conveyor belt 1.

[0020] In a preferred example, the present invention can be further configured as follows: the second conveying device includes a mounting frame 2 and a conveyor belt 2, one end of the mounting frame 2 is rotatably connected to a driving wheel 2, and the other end is rotatably connected to a driven wheel 2, the driving wheel 2 and the driven wheel 2 are respectively meshed and connected to the conveyor belt 2, and a plurality of auxiliary rollers 2 rotatably connected to the mounting frame 2 are arranged between the driving wheel 2 and the driven wheel 2, and the auxiliary rollers 2 are respectively in rolling contact with the inner side of the conveyor belt 2, and one side of the end of the mounting frame 2 is connected to a driving motor 2, and the output shaft of the driving motor 2 is connected to the driving wheel 2.

[0021] By adopting the above technical solution, the second drive motor is connected to the second driving wheel via the output shaft, providing power to the second conveyor belt, so that the second conveyor device can achieve continuous and stable material transmission through the second conveyor belt.

[0022] In summary, the present invention provides at least one of the following beneficial technical effects of a surface damage detection device for sanitary napkin production:

[0023] 1. Visual inspection equipment is used to visually inspect the surfaces of sanitary napkins on the first conveyor and the second conveyor respectively to identify defects such as damage and stains. Photoelectric sensor three is used to detect whether the sanitary napkin has reached the predetermined position of the ejection mechanism. When the sanitary napkin reaches the predetermined position and is judged to be unqualified, photoelectric sensor three sends a signal to trigger the electric push rod two to extend, driving the ejection plate to remove the unqualified sanitary napkin from the first conveyor and push it into the collection frame, thereby avoiding the mixing of unqualified products and improving the overall quality of the product.

[0024] 2. After the sanitary napkin on the first conveyor completes the single-side inspection, the flip plate assembly realizes the flipping operation of the sanitary napkin, and cooperates with the telescopic rod assembly to accurately push the turned-over sanitary napkin to the second conveyor for the other side inspection, so as to realize the double-sided inspection of the sanitary napkin, improve the comprehensiveness of the inspection, and improve the inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0026] Figure 1 It is a structural diagram of the utility model;

[0027] Figure 2 for Figure 1 Front view of

[0028] Figure 3 This is a structural diagram of the material turning device of the utility model;

[0029] Figure 4 This is a schematic structural diagram of the pusher assembly of the utility model;

[0030] Figure 5 This is a structural diagram of the material picking mechanism of the utility model;

[0031] Figure 6 This is a schematic structural diagram of the first conveying device of the present utility model;

[0032] Figure 7 It is a structural schematic diagram of the second conveying device of the present utility model.

[0033] In the figure: 10, first conveyor; 20, second conveyor; 3, visual inspection equipment; 40, material removal mechanism; 5, collection frame; 60, turning device; 70, pushing assembly;

[0034] 11. Mounting frame (1); 12. Conveyor belt (1); 13. Driving pulley (1); 14. Driven pulley (1); 15. Auxiliary roller (1); 16. Drive motor (1);

[0035] 21. Mounting frame 2; 22. Conveyor belt 2; 23. Driving pulley 2; 24. Driven pulley 2; 25. Auxiliary roller 2; 26. Driving motor 2;

[0036] 41. Install the side panel; 42. Electric push rod 2; 43. Ejector plate; 44. Photoelectric sensor 3;

[0037] 61. Bracket; 62. Flap assembly; 63. Telescopic rod assembly; 64. Driving device 1;

[0038] 71. Mounting plate; 72. Rotating shaft 2; 73. Rotating push plate; 74. Driving device 2; 75. Photoelectric sensor 2;

[0039] 621. Photoelectric sensor 1; 622. Rotating axis 1; 623. Flip plate; 624. Semicircular protective plate;

[0040] 631. Connecting plate; 632. Electric push rod 1; 633. Push plate. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0042] It should be noted that these drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0043] Reference Figure 1-7, a surface damage detection device for sanitary napkin production disclosed in the utility model includes: a first conveyor 10 and a second conveyor 20, the first conveyor 10 and the second conveyor 20 are respectively provided with a visual inspection device 3, one side of the first conveyor 10 and the second conveyor 20 are respectively installed with a material picking mechanism 40, and the other side of the first conveyor 10 and the second conveyor 20 are respectively placed with a collecting frame 5 arranged corresponding to the material picking mechanism 40, the first conveyor 10 and the second conveyor 20 are staggered, and the end of the first conveyor 10 close to the second conveyor 20 is installed with a turning device 60, the turning device 60 includes a bracket 61, the top of the bracket 61 is connected to a flap assembly 62, the side of the bracket 61 away from the second conveyor 20 is connected to a telescopic rod assembly 63, and the other side is connected to a driving device 64 that drives the flip assembly 62 to rotate, the telescopic rod assembly 63 is suitable for pushing the turned material to On the second conveyor 20, the flip assembly 62 includes a photoelectric sensor 621 and a rotating shaft 622 rotatably connected to the top of the bracket 61. The surface of the rotating shaft 622 has four flips 623 in a circular array. The output end of the driving device 64 is connected to the rotating shaft 622. When the driving device 64 drives the rotating shaft 622 to rotate, the upper surfaces of the two symmetrical flips 623 are respectively in the same plane with the tops of the first conveyor 10 and the second conveyor 20. When the flips 623 are in a horizontal state, one of the flips 623 is arranged close to the first conveyor 10, and the end of the other flip 623 close to the rotating shaft 622 coincides with one end of the second conveyor 20. The telescopic rod assembly 63 includes a connecting plate 631 and an electric push rod 632 installed thereon. The protruding end of the electric push rod 632 is connected to a push plate 633. The bottom of the push plate 633 is located above the flip plate 623 in the horizontal state and is arranged close to the flip plate 623.The driving device 1 64 is preferably a servo motor. The sanitary napkins are smoothly transported on the first conveyor 10 and the second conveyor 20. The visual inspection device 3 can capture and analyze the image of the sanitary napkin surface in real time and accurately identify any damage or defects. Once unqualified products are detected, the PLC on the production line will prompt the ejection mechanism 40 to remove the problem sanitary napkins from the first conveyor 10 and the second conveyor 20 and collect them in the corresponding collection frame 5. After the sanitary napkins are inspected on the first conveyor 10, if further inspection is required on the second conveyor 20, The sanitary napkin is transported from the first conveyor 10 to the second conveyor 20. When the photoelectric sensor 621 detects whether the sanitary napkin has reached the predetermined position of the flap assembly 62, the photoelectric sensor 621 sends a signal, which cooperates with the PLC on the production line to trigger the drive device 64. The drive device 64 drives the rotating shaft 622 to rotate, causing the flap 623 to flip, turning the sanitary napkin over. The electric push rod 632 then drives the push plate 633 to move, pushing the sanitary napkin onto the second conveyor 20 for transmission inspection, thus achieving double-sided inspection.

[0044] The first conveyor 10 is provided with a pushing assembly 70 near the top of the second conveyor 20. The pushing assembly 70 includes symmetrically arranged mounting plates 71. A rotating shaft 2 72 is rotatably connected between the tops of the mounting plates 71. A plurality of rotating pushing plates 73 are arranged in an annular array on the surface of the rotating shaft 2 72. A driving device 2 74 for driving the rotating shaft 2 72 is installed on one of the mounting plates 71. A photoelectric sensor 2 75 is connected to the inner bottom end of one of the mounting plates 71. The photoelectric sensor 2 75 is arranged near the visual inspection device 3. The driving device 2 74 is preferably a servo motor. After the sanitary napkin on the first conveyor 10 completes the single-sided inspection, the sanitary napkin is transported by the first conveyor 10 and moves to the area corresponding to the photoelectric sensor 2 75. , the photoelectric sensor 2 75 detects whether the sanitary napkin reaches the predetermined position of the pushing assembly 70. When the sanitary napkin reaches the predetermined position and the visual inspection has been completed, the photoelectric sensor 2 75 sends a signal, and cooperates with the PLC to trigger the driving device 2 74 to drive the rotating shaft 2 72 to rotate, so that the rotating push plate 73 rotates, and the sanitary napkin can be smoothly and accurately transferred from the first conveying device 10 to the flip assembly 62. When the flip 623 is in a horizontal state, one of the flip plates 623 is arranged close to the first conveying device 10 for receiving the sanitary napkin conveyed from the first conveying device 10, and the other flip plate 623 is close to one end of the rotating shaft 1 622 and coincides with one end of the second conveying device 20, so as to push the flipped sanitary napkin to the second conveying device 20.

[0045] The flap assembly 62 also includes two semicircular protective plates 624, which are respectively mounted on both ends of the rotating shaft 622 and fixedly connected to the inner side of the bracket 61. The arc-shaped ends of the semicircular protective plates 624 are arranged close to the first conveying device 10, and the photoelectric sensor 621 is installed on the inner side of one of the semicircular protective plates 624 and is located above the flap 623 in a horizontal state; when the sanitary napkin is conveyed to the predetermined position of the flap assembly 62, the photoelectric sensor 621 can detect the presence of the sanitary napkin, and cooperate with the PLC on the production line to trigger the drive device 64 to drive the rotating shaft 622 to rotate, thereby realizing the flipping action of the flap 623 and turning the sanitary napkin over. At this time, the semicircular protective plate 624 protects the sanitary napkin to prevent it from being dislocated or falling.

[0046] The material removal mechanism 40 includes an installation side plate 41, on which an electric push rod 2 42 is passed, and one end of the electric push rod 2 42 is connected to a material removal plate 43, and the bottom of the material removal plate 43 is located above the first conveyor 10 and is arranged close to its top. A photoelectric sensor 3 44 is also installed on the side of the installation side plate 41 close to the aggregate frame 5, and the photoelectric sensor 3 44 is arranged close to the corresponding visual inspection device 3 and close to the reference surface at the top of the first conveyor 10; the photoelectric sensor 3 44 is used to detect whether the sanitary napkin has reached the predetermined position of the material removal mechanism 40, and cooperates with the visual inspection device 3 and the PLC on the production line. When the sanitary napkin reaches the predetermined position and is judged to be unqualified, the photoelectric sensor 3 44 sends a signal, triggering the electric push rod 2 42 to extend, driving the material removal plate 43 to remove the detected unqualified sanitary napkin from the first conveyor 10, and push it into the aggregate frame 5, thereby avoiding the mixing of unqualified products and improving the overall quality of the product.

[0047] The first conveying device 10 includes a mounting frame 11 and a conveyor belt 12. One end of the mounting frame 11 is rotatably connected to a driving wheel 13, and the other end is rotatably connected to a driven wheel 14. The driving wheel 13 and the driven wheel 14 are respectively engaged with the conveyor belt 12. A plurality of auxiliary rollers 15 rotatably connected to the mounting frame 11 are arranged between the driving wheel 13 and the driven wheel 14. The auxiliary rollers 15 are respectively in rolling contact with the inner side of the conveyor belt 12. One end of the mounting frame 11 is connected to a driving motor 16. The output shaft of the driving motor 16 is connected to the driving wheel 13. The second conveying device 20 includes a mounting frame 21 and a conveyor belt 22. One end of the mounting frame 21 is rotatably connected to a driving wheel 23, and the other end is rotatably connected to a driven wheel 24. The driving wheel 23 and the driven wheel 24 are respectively engaged with the conveyor belt 22. A plurality of auxiliary rollers 25 rotatably connected to the mounting frame 21 are arranged between the driving wheel 23 and the driven wheel 24. The auxiliary rollers 25 are respectively in rolling contact with the inner side of the conveyor belt 22. One side of the end of the mounting frame 21 is connected to a driving motor 26, and the output shaft of the driving motor 26 is connected to the driving wheel 23.

[0048] The implementation principle of this embodiment is as follows: when in use, the sanitary napkin to be inspected is placed at the starting position of the first conveyor device 10, and the sanitary napkin will be smoothly transported along the conveyor belt 12 to the inspection area of ​​the visual inspection device 3. The visual inspection device 3 will automatically capture and analyze the image of the surface of the sanitary napkin, and identify damage, stains or other defects on the surface of the sanitary napkin, and cooperate with the PLC on the production line to start the material removal mechanism 40 to remove unqualified products from the conveyor belt 12 and collect them in the corresponding collection frame 5 for subsequent processing or analysis, and determine whether the sanitary napkin is defective. For qualified sanitary napkins, when they reach the position of the pushing assembly 70, the photoelectric sensor 2 75 will detect the presence of the sanitary napkins, and the driving device 2 74 will drive the rotating shaft 2 72 to rotate, driving the rotating push plate 73 to enable the sanitary napkins to smoothly transition from the first conveying device 10 to the flip plate 623. At this time, the driving device 1 64 flip plate 623 rotates to turn the sanitary napkin over, and then the electric push rod 1 632 drives the push plate 633 to move, pushing the sanitary napkin to the second conveying device 20 for transmission inspection, thereby realizing double-sided inspection.

[0049] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A surface damage detection device for sanitary napkin production, comprising: A first conveying device (10) and a second conveying device (20), wherein a visual inspection device (3) is respectively mounted on the first conveying device (10) and the second conveying device (20), a material removal mechanism (40) is respectively installed on one side of the first conveying device (10) and the second conveying device (20), and a material collection frame (5) corresponding to the material removal mechanism (40) is respectively placed on the other side of the first conveying device (10) and the second conveying device (20), characterized in that the first conveying device (10) and the second conveying device (20) are staggered, and a material turning device (60) is installed on one end of the first conveying device (10) close to the second conveying device (20); The turning device (60) includes a bracket (61), the top of the bracket (61) is connected to a flap assembly (62), the side of the bracket (61) away from the second conveying device (20) is connected to a telescopic rod assembly (63), and the other side is connected to a driving device (64) for driving the flap assembly (62) to rotate, and the telescopic rod assembly (63) is suitable for pushing the turned material onto the second conveying device (20).

2. The surface damage detection device for sanitary napkin production according to claim 1, characterized in that: The flap assembly (62) includes a photoelectric sensor (621) and a rotating shaft (622) rotatably connected to the top of the bracket (61); the surface of the rotating shaft (622) has four flaps (623) in a circular array; the output end of the driving device (64) is connected to the rotating shaft (622); when the driving device (64) drives the rotating shaft (622) to rotate, the upper surfaces of the two symmetrical flaps (623) are respectively in the same plane with the tops of the first conveying device (10) and the second conveying device (20); when the flaps (623) are in a horizontal state, one of the flaps (623) is arranged close to the first conveying device (10), and the end of the other flap (623) close to the rotating shaft (622) coincides with one end of the second conveying device (20).

3. The surface damage detection device for sanitary napkin production according to claim 1, characterized in that: The first conveying device (10) is provided with a pusher assembly (70) near the top of the second conveying device (20), and the pusher assembly (70) includes symmetrically arranged mounting plates (71), and a rotating shaft 2 (72) is rotatably connected between the tops of the mounting plates (71), and a surface annular array of the rotating shaft 2 (72) has a plurality of rotating pusher plates (73), one of the mounting plates (71) is provided with a driving device 2 (74) for driving the rotating shaft 2 (72) to rotate, and the inner bottom end of one of the mounting plates (71) is connected to a photoelectric sensor 2 (75), and the photoelectric sensor 2 (75) is provided near the visual detection device (3).

4. The surface damage detection device for sanitary napkin production according to claim 2, characterized in that: The flap assembly (62) further includes two semicircular protective plates (624), which are respectively mounted on both ends of the rotating shaft (622) and fixedly connected to the inner side of the bracket (61). The arc-shaped ends of the semicircular protective plates (624) are arranged close to the first conveying device (10). The photoelectric sensor (621) is installed on the inner side of one of the semicircular protective plates (624) and is located above the flap (623) in a horizontal state.

5. A surface damage detection device for sanitary napkin production according to claim 2 or 4, characterized in that: The telescopic rod assembly (63) includes a connecting plate (631) and an electric push rod (632) mounted thereon, wherein the protruding end of the electric push rod (632) is connected to a push plate (633), and the bottom of the push plate (633) is located above the flip plate (623) in a horizontal state and is arranged close to the flip plate (623).

6. The surface damage detection device for sanitary napkin production according to claim 1, characterized in that: The material-removing mechanism (40) includes a mounting side plate (41), on which a second electric push rod (42) is provided, and one end of the second electric push rod (42) is connected to a material-removing plate (43), the bottom of the material-removing plate (43) is located above the first conveying device (10) and is arranged close to the top thereof, and a third photoelectric sensor (44) is also installed on the side of the mounting side plate (41) close to the collecting frame (5), and the third photoelectric sensor (44) is arranged close to the corresponding visual detection device (3) and close to the reference surface at the top of the first conveying device (10).

7. The surface damage detection device for sanitary napkin production according to claim 1, characterized in that: The first conveying device (10) includes a mounting frame (11) and a conveyor belt (12), one end of the mounting frame (11) is rotatably connected to a driving wheel (13), and the other end is rotatably connected to a driven wheel (14), the driving wheel (13) and the driven wheel (14) are respectively engaged with the conveyor belt (12), and a plurality of auxiliary rollers (15) rotatably connected to the mounting frame (11) are arranged between the driving wheel (13) and the driven wheel (14), and the auxiliary rollers (15) are respectively in rolling contact with the inner side of the conveyor belt (12), and one side of the end of the mounting frame (11) is connected to a driving motor (16), and the output shaft of the driving motor (16) is connected to the driving wheel (13).

8. The surface damage detection device for sanitary napkin production according to claim 1, characterized in that: The second conveying device (20) includes a mounting frame (21) and a conveyor belt (22). One end of the mounting frame (21) is rotatably connected to a driving wheel (23), and the other end is rotatably connected to a driven wheel (24). The driving wheel (23) and the driven wheel (24) are respectively engaged with the conveyor belt (22). A plurality of auxiliary rollers (25) rotatably connected to the mounting frame (21) are arranged between the driving wheel (23) and the driven wheel (24). The auxiliary rollers (25) are respectively in rolling contact with the inner side of the conveyor belt (22). One side of the end of the mounting frame (21) is connected to a driving motor (26), and the output shaft of the driving motor (26) is connected to the driving wheel (23).

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