A liquid sanitary napkin care liquid adding device

Abstract

The invention discloses a liquid sanitary napkin care liquid adding device, comprising a first conveying mechanism, a clamping conveying mechanism and an adding mechanism, wherein two first conveying mechanisms are provided and are located on both sides of the clamping conveying mechanism, the clamping conveying mechanism comprises a mounting frame, a clamping conveying assembly and a driving assembly, and two groups of clamping conveying assemblies are provided and are located on both sides of the sanitary napkin conveying direction. When conveying the sanitary napkin, the invention relies on two left and right movable clamping members to clamp the two ends of the sanitary napkin, and at the same time, the two clamping conveying assemblies can be close to each other, and under the downward pressure of the roller shaft, the sanitary napkin can be attached to the surface of the roller shaft to form a V-shaped structure, and then the care liquid is sprayed on the two ends of the sanitary napkin by the spray head, and when the humidity sensor detects the care liquid, the adding work is completed, so that the addition amount of the care liquid can be effectively controlled to avoid the situation of excessive addition and overflow.

Description

Technical Field

[0001] The invention discloses a liquid sanitary napkin care liquid adding device, belonging to the technical field of sanitary napkin production. Background Art

[0002] Sanitary napkins are sanitary products used by women during menstruation. The main materials are cotton, non-woven fabrics, pulp or polymers and polymer composite paper formed by the above materials. The side design is mainly used to prevent side leakage. From the inside to the outside, it is divided into three layers: the surface layer, the absorbent core, and the bottom layer. Existing sanitary napkins are generally dry types. When used during women's menstrual period, menstrual blood stays on the sanitary napkin for a long time, making the female private parts in a long-term moist state, which will breed bacteria. Design a sanitary napkin with a care solution that contains bactericidal ingredients and other private care ingredients Ingredients, such as bamboo leaf flavonoids, can solve this problem, and the existing care solution can usually be added by laying the sanitary napkin flat during the production process, using a nozzle to spray the care solution on the surface of the sanitary napkin, and then the care solution is absorbed by the absorbent core layer. Since the sanitary napkin is in motion when spraying the care solution, the entire care solution addition time is short, and it is impossible to control the amount of care solution added and judge whether it is added evenly. When the amount added is small, the care and sterilization effects are not good, and when the amount added is too much, the care solution will overflow, which not only causes waste, but also pollutes the production work surface. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the prior art and to provide a device for adding liquid sanitary napkin care liquid.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions: a liquid sanitary napkin care liquid adding device, comprising a first conveying mechanism, a clamping conveying mechanism and an adding mechanism, wherein the first conveying mechanism is provided with two and is located on both sides of the clamping conveying mechanism, the clamping conveying mechanism comprises a mounting frame, a clamping conveying assembly and a driving assembly, the clamping conveying assembly is provided with two groups and is located on both sides of the sanitary napkin conveying direction, the clamping conveying assembly comprises a mounting seat, a movable clamping piece, a driving block and two conveyor belts, the two conveyor belts are arranged on the mounting seat according to an upper and lower distribution, the movable clamping piece is provided with a plurality and is fixed on the conveyor belt at equal intervals, the movable clamping piece on one side of the two conveyor belts close to each other remains relatively still during the horizontal movement, and the driving block is fixed on the mounting seat. In the middle part, when the movable clamping part moves horizontally through the driving block, the driving block applies a force to the movable clamping part to clamp the sanitary napkin. The driving assembly is arranged on the mounting frame and is used to drive the two clamping and conveying assemblies to approach or move away from each other. The adding mechanism includes a lifting assembly, a roller shaft, a spray head, a liquid inlet pipe and a humidity sensor. The lifting assembly is arranged on the mounting frame, and both ends of the roller shaft are installed on the lifting assembly and are driven to lift vertically by the lifting assembly. A fixed bracket is arranged on the outer side of the roller shaft. A plurality of spray heads are arranged and are installed on the fixed bracket in two rows with equal spacing. The liquid inlet pipe is connected to the spray head. The humidity sensor is arranged at the lowest point of the roller shaft. One end of the first conveying mechanism and the second conveying mechanism both extend between the left and right groups of clamping and conveying assemblies.

[0005] Preferably, the movable clamping member includes a fixed block, a movable block, a pressure rod, a first spring and a limiting bolt, the fixed block is fixed on the conveyor belt, two of the first springs and the limiting bolt are provided, one end of the limiting bolt passes through the fixed block and is fixedly connected to the movable block, the first spring is sleeved on the outside of the limiting bolt and applies a force to the movable block to approach the fixed block, both ends of the driving block are provided with a first wedge-shaped surface, one end of the pressure rod is fixedly connected to the movable block, and the other end extends to the outside of the fixed block.

[0006] Preferably, the lifting assembly includes a cylinder and a mounting block, two of each of the cylinder and the mounting block are provided, both ends of the roller shaft are provided with limiting parts that slide with the mounting block, the cylinder is fixed on the mounting frame, and its piston is fixedly connected to the mounting block.

[0007] Preferably, a power assembly for telescopic sliding of the humidity sensor is arranged in the roller shaft, and the power assembly includes a sliding rod, a second spring, a third spring, a mounting rod, a first plug and a second plug, a sliding groove is arranged at the center of the roller shaft, the sliding rod is slidably arranged in the sliding groove, and one end of the sliding rod extends to the outside of the roller shaft, the first plug is threadedly installed at the other end of the roller shaft corresponding to the sliding rod, the two ends of the second spring respectively conflict with the first plug and the sliding rod, the mounting rod and the second plug are coaxially installed, the mounting rod is slidably arranged in the roller shaft, and its sliding direction is perpendicular to the sliding direction of the sliding rod, the humidity sensor is fixed to the lower end of the mounting rod, the sliding rod is provided with a plurality of second wedge surfaces, the third spring is sleeved on the mounting rod and applies a force to the mounting rod that conflicts with the second wedge surfaces, the center of the second plug is provided with a through hole for the humidity sensor and the mounting rod to pass through, a driving rod is provided on the mounting frame, the lower end of the driving rod is provided with a third wedge surface, and one end of the sliding rod conflicts with the third wedge surface.

[0008] Preferably, the driving assembly includes a guide rod, a screw rod and a first motor, both ends of the screw rod and the guide rod are installed on a mounting frame, and the screw rod has two sections of threads with opposite rotation directions, the two mounting seats are threadedly connected to the screw rod, and the mounting seats are slidingly connected to the guide rod, and the output shaft of the first motor is fixedly connected to the screw rod.

[0009] Preferably, the conveyor belt includes a second motor, a belt, a fixed pulley, a movable pulley, a slider and an adjusting bolt, the second motor is fixed on a mounting seat, the fixed pulley is fixed on an output shaft of the second motor, the movable pulley is rotatably mounted on the slider, the mounting seat is provided with two mounting grooves, the slider is slidably arranged in one of the mounting grooves, the belt is sleeved on the outside of the fixed pulley and the movable pulley, one end of the adjusting bolt is located in the other mounting groove, and the other end is in contact with the slider, and the middle part of the adjusting bolt is threadedly connected to the mounting seat.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] By setting up a first conveying mechanism, a clamping conveying mechanism, an adding mechanism and a second conveying mechanism, when the sanitary napkin is conveyed to the clamping conveying mechanism, the two ends of the sanitary napkin are clamped by two left and right movable clamping members, and at the same time, the two clamping conveying components can be close to each other, and under the downward pressure of the roller, the sanitary napkin can be attached to the surface of the roller to form a V-shaped structure, and then the care liquid is sprayed on the two ends of the sanitary napkin by the spray head. When the humidity sensor detects the care liquid, the adding work is completed. In this way, the amount of care liquid added can be effectively controlled to avoid overflow due to excessive addition, and it can also ensure that the care liquid at each position of the sanitary napkin core layer is added evenly.

[0012] The clamping and conveying mechanism can clamp multiple sanitary napkins at one time, so that care liquid can be added to both ends of multiple sanitary napkins simultaneously, which can effectively improve the production efficiency of sanitary napkins. In addition, the conveying between the first conveying mechanism, the clamping and conveying mechanism and the second conveying mechanism can automatically clamp or release the sanitary napkins, thereby achieving the effect of automatic control. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a liquid sanitary napkin care liquid adding device of the present invention;

[0014] Figure 2 It is a schematic diagram of the structure of the clamping and conveying mechanism and the adding mechanism in the present invention;

[0015] Figure 3 It is a structural schematic diagram of the clamping and conveying assembly in the present invention;

[0016] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0017] Figure 5 This is a structural schematic diagram of the adding mechanism in the present invention;

[0018] Figure 6 It is a schematic diagram of the internal structure of the roller shaft in the present invention;

[0019] Figure 7 for Figure 6 A partial enlarged view of point B in the middle;

[0020] Figure numerals: 1, first conveying mechanism; 2, clamping conveying assembly; 3, lifting assembly; 4, adding mechanism; 5, second conveying mechanism; 6, mounting frame; 7, first motor; 8, guide rod; 9, movable pulley; 10, cylinder; 11, liquid inlet pipe; 12, mounting block; 13, movable clamping member; 14, fixed pulley; 15, belt; 16, sliding rod; 17, second motor; 18, sprinkler head; 19, mounting seat; 20, adjusting bolt; 21, slider; 2 2. Mounting groove; 23. Second plug; 24. Driving block; 25. Limit bolt; 26. First spring; 27. Movable block; 28. Fixed block; 29. ​​Pressing rod; 30. First wedge-shaped surface; 31. Driving rod; 32. Third wedge-shaped surface; 33. Through hole; 34. Roller; 35. Limiting part; 36. Fixed bracket; 37. Second spring; 38. First plug; 39. Humidity sensor; 40. Mounting rod; 41. Second wedge-shaped surface; 42. Third spring. DETAILED DESCRIPTION

[0021] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0022] like Figure 1-Figure 7 As shown, a liquid sanitary napkin care liquid adding device includes a first conveying mechanism 1, a clamping conveying mechanism and an adding mechanism 4. The first conveying mechanism 1 is provided with two and is located on both sides of the clamping conveying mechanism. The clamping conveying mechanism includes a mounting frame 6, a clamping conveying assembly 2 and a driving assembly. The clamping conveying assembly 2 is provided with two groups and is located on both sides of the sanitary napkin conveying direction. The clamping conveying assembly 2 includes a mounting seat 19, a movable clamping member 13, a driving block 24 and two conveyor belts. The two conveyor belts are arranged on the mounting seat 19 according to an upper and lower distribution. There are multiple movable clamping members 13, which are fixed on the conveyor belts at equal intervals. The movable clamping members 13 on one side of the two conveyor belts close to each other remain relatively stationary during the horizontal movement. The driving block 24 is fixed to the middle of the mounting seat 19. The movable clamping member 13 moves horizontally through When the driving block 24 is driven, the driving block 24 applies a force to the movable clamping member 13 to clamp the sanitary napkin. The driving component is arranged on the mounting frame 6 and is used to drive the two clamping and conveying components 2 to move closer to or away from each other. The adding mechanism 4 includes a lifting component 3, a roller 34, a spray head 18, a liquid inlet pipe 11 and a humidity sensor 39. The lifting component 3 is arranged on the mounting frame 6. Both ends of the roller 34 are installed on the lifting component 3 and are driven to lift vertically by the lifting component 3. A fixed bracket 36 is arranged on the outer side of the roller 34. A plurality of spray heads 18 are arranged and are installed on the fixed bracket 36 in two rows with equal spacing. The liquid inlet pipe 11 is connected to the spray head 18. The humidity sensor 39 is arranged at the lowest point of the roller 34. One end of the first conveying mechanism 1 and the second conveying mechanism 5 both extend between the left and right groups of clamping and conveying components 2.

[0023] The movable clamping member 13 includes a fixed block 28, a movable block 27, a pressure rod 29, a first spring 26 and a limiting bolt 25. The fixed block 28 is fixed on the conveyor belt. Two first springs 26 and limiting bolts 25 are provided. One end of the limiting bolt 25 passes through the fixed block 28 and is fixedly connected to the movable block 27. The first spring 26 is sleeved on the outer side of the limiting bolt 25 and applies a force to the movable block 27 to approach the fixed block 28. Both ends of the driving block 24 are provided with a first wedge surface 30. One end of the pressure rod 29 is fixedly connected to the movable block 27, and the other end extends to the outer side of the fixed block 28. The conveying speed of the first conveying device is the same as that of the conveyor belt, so that the sanitary napkin is kept in contact with the movable clamping member 13 during the movement when it is not clamped. Relatively still, when the pressure rod 29 in the movable clamping member 13 moves horizontally and hits the first wedge-shaped surface 30, the pressure rod 29 is subjected to the force and drives the movable block 27 away from the fixed block 28, so that the first spring 26 is compressed, and one end of the sanitary napkin can be clamped by relying on the upper and lower movable blocks 27. At this time, the pressure rod 29 hits the surface of the driving block 24, so that the sanitary napkin can keep synchronous movement with the movable clamping member 13 in the state of clamping the sanitary napkin, and the sanitary napkin can be detached from the first conveying mechanism 1, and when the pressure rod 29 is separated from the contact with the pressure rod 29 or the first wedge-shaped surface 30, the first spring 26 drives the movable block 27 to reset, thereby releasing the clamping state of the sanitary napkin, and the sanitary napkin just falls on the second conveying mechanism 5.

[0024] The lifting assembly 3 includes a cylinder 10 and a mounting block 12, and two cylinders 10 and mounting blocks 12 are each provided. Limiting parts 35 that slide with the mounting block 12 are provided at both ends of the roller shaft 34. The cylinder 10 is fixed on the mounting frame 6, and its piston is fixedly connected to the mounting block 12. The cylinder 10 can drive the mounting block 12 and the roller shaft 34 to rise and fall vertically, while the spray head 18 and the liquid inlet pipe 11 also maintain synchronous movement. The limiting part 35 can prevent the roller shaft 34 from rotating, thereby ensuring that the relative position of the spray head 18 and the roller shaft 34 will not change.

[0025] A power assembly for the telescopic sliding of the humidity sensor 39 is arranged in the roller shaft 34, and the power assembly includes a sliding rod 16, a second spring 37, a third spring 42, a mounting rod 40, a first plug 38 and a second plug 23. A slide groove is arranged at the center of the roller shaft 34, the sliding rod 16 is slidably arranged in the slide groove, and one end of the sliding rod 16 extends to the outside of the roller shaft 34, the first plug 38 is threadedly mounted on the other end of the roller shaft 34 corresponding to the sliding rod 16, the two ends of the second spring 37 are respectively in contact with the first plug 38 and the sliding rod 16, the mounting rod 40 and the second plug 23 are coaxially mounted, the mounting rod 40 is slidably arranged in the roller shaft 34, and its sliding direction is perpendicular to the sliding direction of the sliding rod 16, the humidity sensor 39 is fixed to the lower end of the mounting rod 40, the sliding rod 16 is provided with a plurality of second wedge surfaces 41, and the third spring 42 is sleeved on the mounting rod 40 The second spring 37 is pressed against the bottom surface 41 of the sliding rod 16, and the second spring 37 is pressed against the bottom surface 41 of the sliding rod 16, so that the second wedge-shaped surface 41 on the sliding rod 16 moves relative to one end of the mounting rod 40. In this way, the mounting rod 40 drives the humidity sensor 39 to descend, and extends from the roller shaft 34 to be attached to the surface of the sanitary napkin or inserted into the core layer, so as to facilitate the detection of whether the care solution flows to the bottom middle of the V-shaped sanitary napkin when added.

[0026] The driving assembly includes a guide rod 8, a screw and a first motor 7. Both ends of the screw and the guide rod 8 are installed on the mounting frame 6, and the screw has two sections of threads with opposite rotation directions. Two mounting seats 19 are threadedly connected to the screw, and the mounting seat 19 is slidably connected to the guide rod 8. The output shaft of the first motor 7 is fixedly connected to the screw. When the first motor 7 drives the screw to rotate, it can drive the two mounting seats 19 to move closer to or away from each other, so that the two clamping and conveying assemblies 2 can be smoothly pressed down by the roller 34 after clamping the sanitary napkin. The force of the roller 34 to press down the sanitary napkin does not need to be too large. Its main purpose is to allow the sanitary napkin to stick to the lower half of the surface of the roller 34 and finally present a V shape.

[0027] The conveyor belt includes a second motor 17, a belt 15, a fixed pulley 14, a movable pulley 9, a slider 21 and an adjusting bolt 20. The second motor 17 is fixed on a mounting seat 19, the fixed pulley 14 is fixed on an output shaft of the second motor 17, the movable pulley 9 is rotatably mounted on the slider 21, two mounting grooves 22 are provided on the mounting seat 19, the slider 21 is slidably arranged in one of the mounting grooves 22, the belt 15 is sleeved on the outer side of the fixed pulley 14 and the movable pulley 9, one end of the adjusting bolt 20 is located in the other mounting groove 22, and the other end is in conflict with the slider 21, the middle part of the adjusting bolt 20 is threadedly connected to the mounting seat 19, the second motor 17 drives the fixed pulley 14 to rotate, so that the belt 15 can drive the movable clamping member 13 to rotate synchronously, and the adjusting bolt 20 can change the inner side of the slider 21 and the movable pulley 9 in the mounting groove 22, so that the belt 15 can be in a taut state, and it can also be convenient for its disassembly and assembly.

[0028] Working principle: When adding care liquid to the sanitary napkin (this sanitary napkin includes a core layer and a leak-proof surface layer), the sanitary napkin is conveyed by the first conveying mechanism 1 to between the two groups of clamping and conveying components 2, and the conveying height is located between the two belts 15 on the same side. When the conveyor belt drives the movable clamping member 13 to pass through the driving block 24, the pressing rod 29 contacts the first wedge surface 30, and the upper and lower movable blocks 27 are brought close to each other to clamp one end of the sanitary napkin. In this way, the movable clamping members 13 in the left and right groups of clamping and conveying components 2 can simultaneously hold both ends of the sanitary napkin. The conveyor belt can drive the sanitary napkin to move toward the second conveying mechanism 5. The two clamping and conveying components 2 can clamp multiple sanitary napkins at one time. When the clamped multiple sanitary napkins are located below the roller 34, the cylinder 10 drives the roller 34 to descend. At the same time, the two groups of clamping and conveying components 2 are driven by the driving component to approach each other, so that the roller 34 can press down the sanitary napkin, and finally the sanitary napkin presents a V-shaped structure. Then the liquid inlet pipe 11 conveys the care liquid to the spray head 18, and the two rows of spray heads 18 spray the care liquid to the sanitary napkin at the same time. At the highest position at both ends, after the core layers at both ends of the sanitary napkin absorb the care solution, the excess care solution will flow downward along the core layer. As the roller 34 descends, one end of the sliding rod 16 will slide along the third wedge surface 32, and drive the sliding rod 16 to slide horizontally, so that the mounting rod 40 drives the humidity sensor 39 to descend, so that the humidity sensor 39 can be attached to the surface of the sanitary napkin or inserted into the core layer (for example, with a puncture needle, only the insertion depth needs to be controlled). When the humidity sensor 39 detects the care solution, the adding work is completed, and then the cylinder 10 drives the roller 34 to rise. The two groups of clamping and conveying components 2 are driven away from each other by the driving component, and the sanitary napkin is straightened again. Finally, under the drive of the conveyor belt, the movable clamping member 13 is separated from the resistance of the driving block 24, and the clamping of the sanitary napkin can be released, and the sanitary napkin can be automatically dropped on the second conveying mechanism 5 and continued to be conveyed. In this way, the automatic addition of the sanitary napkin care solution can be completed. While ensuring that the care solution is evenly added to each position of the sanitary napkin, the amount of care solution used can be reduced, and overflow can be avoided.

[0029] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A liquid sanitary napkin care liquid adding device, comprising a first conveying mechanism (1), a clamping conveying mechanism and an adding mechanism (4), characterized in that: The first conveying mechanism (1) is provided with two and is located on both sides of the clamping conveying mechanism. The clamping conveying mechanism comprises a mounting frame (6), a clamping conveying assembly (2) and a driving assembly. The clamping conveying assembly (2) is provided with two groups and is located on both sides of the sanitary napkin conveying direction. The clamping conveying assembly (2) comprises a mounting seat (19), a movable clamping member (13), a driving block (24) and two conveyor belts. The two conveyor belts are arranged on the mounting seat (19) in an upper and lower distribution. The movable clamping members (13) are provided in plurality and are fixed on the conveyor belts at equal intervals. The movable clamping members (13) on one side of the two conveyor belts are close to each other. ) remains relatively still during the horizontal movement, the driving block (24) is fixed to the middle of the mounting seat (19), and when the movable clamping member (13) moves horizontally past the driving block (24), the driving block (24) applies a force to the movable clamping member (13) to clamp the sanitary napkin, the driving assembly is arranged on the mounting frame (6), and is used to drive the two clamping and conveying assemblies (2) to move closer to or away from each other, the adding mechanism (4) comprises a lifting assembly (3), a roller (34), a spray head (18), a liquid inlet pipe (11) and a humidity sensor (39), the lifting assembly (3) is arranged on the mounting frame (6), the roller (34) The two ends of the roller (34) are mounted on the lifting assembly (3) and are driven by the lifting assembly (3) to vertically lift and lower. A fixed bracket (36) is arranged on the outer side of the roller (34). A plurality of spray heads (18) are arranged and are mounted on the fixed bracket (36) in two rows with equal spacing. The liquid inlet pipe (11) is connected to the spray head (18). The humidity sensor (39) is arranged at the lowest point of the roller (34). One end of the first conveying mechanism (1) and the second conveying mechanism (5) both extend between the left and right clamping conveying assemblies (2). The movable clamping member (13) includes a fixed block (28), a movable block (27), a pressing rod (29) and a pressure rod (21). ), a first spring (26) and a limiting bolt (25), the fixed block (28) being fixed on the conveyor belt, two first springs (26) and two limiting bolts (25) being provided, one end of the limiting bolt (25) passing through the fixed block (28) and being fixedly connected to the movable block (27), the first spring (26) being sleeved on the outer side of the limiting bolt (25) and exerting a force on the movable block (27) to approach the fixed block (28), both ends of the driving block (24) being provided with a first wedge surface (30), one end of the pressing rod (29) being fixedly connected to the movable block (27), and the other end extending to the outer side of the fixed block (28).

2. A liquid sanitary napkin care liquid adding device according to claim 1, characterized in that: The lifting assembly (3) comprises a cylinder (10) and a mounting block (12), wherein two of the cylinder (10) and two of the mounting block (12) are provided, and both ends of the roller shaft (34) are provided with limit portions (35) that are slidably matched with the mounting block (12). The cylinder (10) is fixed on the mounting frame (6), and its piston is fixedly connected to the mounting block (12).

3. A liquid sanitary napkin care liquid adding device according to claim 1, characterized in that: The roller shaft (34) is provided with a power assembly for telescopic sliding of the humidity sensor (39), the power assembly comprising a sliding rod (16), a second spring (37), a third spring (42), a mounting rod (40), a first plug (38) and a second plug (23); a slide groove is provided at the center of the roller shaft (34); the sliding rod (16) is slidably arranged in the slide groove, and one end of the sliding rod (16) extends to the outside of the roller shaft (34); the first plug (38) is threadedly mounted on the other end of the roller shaft (34) corresponding to the sliding rod (16); the two ends of the second spring (37) are respectively in contact with the first plug (38) and the sliding rod (16); the mounting rod (40) and the second plug (23) are coaxially mounted; the mounting rod The humidity sensor (39) is fixed to the lower end of the mounting rod (40), and the sliding rod (16) is provided with a plurality of second wedge-shaped surfaces (41). The third spring (42) is sleeved on the mounting rod (40) and applies a force to the mounting rod (40) to abut against the second wedge-shaped surfaces (41). The center of the second plug (23) is provided with a through hole (33) for the humidity sensor (39) and the mounting rod (40) to pass through. The mounting frame (6) is provided with a driving rod (31), and the lower end of the driving rod (31) is provided with a third wedge-shaped surface (32). One end of the sliding rod (16) abuts against the third wedge-shaped surface (32).

4. A liquid sanitary napkin care liquid adding device according to claim 1, characterized in that: The driving assembly comprises a guide rod (8), a screw rod and a first motor (7), the two ends of the screw rod and the guide rod (8) being mounted on a mounting frame (6), the screw rod having two sections of threads with opposite rotation directions, the two mounting seats (19) being threadedly connected to the screw rod, the mounting seats (19) being slidably connected to the guide rod (8), and the output shaft of the first motor (7) being fixedly connected to the screw rod.

5. A liquid sanitary napkin care liquid adding device according to claim 1, characterized in that: The conveyor belt comprises a second motor (17), a belt (15), a fixed pulley (14), a movable pulley (9), a slider (21) and an adjusting bolt (20); the second motor (17) is fixed on a mounting seat (19); the fixed pulley (14) is fixed on an output shaft of the second motor (17); the movable pulley (9) is rotatably mounted on the slider (21); two mounting grooves (22) are provided on the mounting seat (19); the slider (21) is slidably arranged in one of the mounting grooves (22); the belt (15) is sleeved on the outer sides of the fixed pulley (14) and the movable pulley (9); one end of the adjusting bolt (20) is located in the other mounting groove (22); the other end contacts the slider (21); and the middle part of the adjusting bolt (20) is threadedly connected to the mounting seat (19).

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