A wing folding device for sanitary napkin

Abstract

The invention relates to the technical field of sanitary napkin processing, and discloses a wing folding device for sanitary napkins, comprising a support seat, a conveyor belt is arranged on the top of the support seat, and a driving roller inside the conveyor belt is rotatably connected to the top of the support seat; through a first adsorption roller, the negative pressure generated inside the first adsorption roller causes the adsorption holes on the surface to generate suction, so that when the sanitary napkin transported above the conveyor belt passes under the first adsorption roller, it will be adsorbed by the adsorption holes of the first adsorption roller to be fixed on the surface of the first adsorption roller, and because the areas of the side suction grooves arranged at both ends of the first adsorption roller are also covered with adsorption holes, the wings on both sides of the adsorbed sanitary napkin that exceed the surface range of the first adsorption roller are adsorbed by the adsorption holes in the side suction groove area, so that the wings of the sanitary napkin are bent and creases are formed to facilitate subsequent folding.

Description

Technical Field

[0001] The invention relates to the technical field of sanitary napkin processing, in particular to a wing folding device for a sanitary napkin. Background Art

[0002] Sanitary napkins are absorbent materials, mainly made of cotton, non-woven fabrics, pulp or polymers and polymer composite paper formed by composites of the above materials. Disposable sanitary napkin products generally have wing structures on both sides of the product body. When the sanitary napkin product is cut by a contour cutter to obtain independent individual products, the wings on both sides of the product body are usually folded from both sides to the main body position.

[0003] The prior art, such as the Chinese patent "CN117137728B", provides a wing folding device for sanitary napkin products, which includes a shell, which is provided with a feed inlet and a discharge outlet; a first transport component, which is used to receive and transport the sanitary napkin to the bottom of the feed inlet; an air pump; a blowing cavity, which is used to blow air toward the first transport component; a transport roller, which is horizontally arranged in the shell, the transport roller is rotatably connected to the shell, and the transport roller is provided with a suction hole, which is used to suck up the sanitary napkin below the feed inlet; a pressing plate, which is arranged on the transport roller, which is used to press the sanitary napkin wings; an adjustment component, which is arranged on the transport roller, and a second transport component, which is arranged in the shell, which is used to transport the sanitary napkin on the top surface of the transport roller to the discharge outlet. The invention can facilitate the folding of the wings of sanitary napkin products, reduce the bending of the wings, and improve the stability of the device.

[0004] In this solution, the sanitary napkin is placed on the first belt with the face to be folded facing downward, and air is blown toward both sides of the first belt body to bend the wing parts of the sanitary napkin that exceed the support range of the first belt, and then the bent wing parts of the sanitary napkin are compacted through subsequent steps. However, in actual use, there are certain requirements for the position of the sanitary napkin on the first belt. It is necessary to ensure that the range of the wings on both sides of the sanitary napkin that exceed the first belt is relatively consistent, otherwise the folding marks of the sanitary napkin wings may be asymmetrical, resulting in a poor folding effect. In addition, since the sanitary napkin is directly placed on the first belt and lacks fixation, and is folded by blowing air, the overall airflow in the transportation area of ​​the first belt changes greatly during transportation, which can easily affect the sanitary napkin being transported, and the sanitary napkin may be displaced or fall off, which is not conducive to the subsequent folding of the wings. Summary of the invention

[0005] The purpose of the present invention is to provide a wing folding device for a sanitary napkin in order to solve the above-mentioned problems and overcome the defects of the prior art, as described in detail below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a sanitary napkin wing folding device, comprising a support base, a conveyor belt is arranged on the top of the support base, and a transmission roller inside the conveyor belt is rotatably connected to the top of the support base;

[0008] A positioning mechanism is provided on the top of the conveyor belt to fix the sanitary napkin transported by the conveyor belt;

[0009] A crease mechanism is provided above the conveyor belt for folding the wings of the sanitary napkin to form creases;

[0010] A compacting mechanism is provided above the crease mechanism for folding the wings of the sanitary napkin;

[0011] The crease mechanism includes two support plates, which are respectively fixedly connected to the support seat at both sides of the conveyor belt, and the position between the two support plates is rotatably connected to the first adsorption roller through the first rotating drum, and side suction grooves are provided at both ends of the first adsorption roller, and adsorption holes are provided at the position of the surface of the first adsorption roller and the side suction grooves.

[0012] Preferably, the inner wall of the first rotating drum is rotatably connected to a first negative pressure tube, and the first negative pressure tube is provided with a first suction port at a position inside the first adsorption roller, and the first negative pressure tube is fixedly connected to the air inlet end of the negative pressure pump through an air inlet pipe.

[0013] Preferably, a servo motor for driving the transmission roller to rotate is fixedly connected to one side of the support seat, and corresponding ends of the two groups of transmission rollers are fixedly connected to a first pulley, and the two first pulleys are connected via a first transmission belt.

[0014] Preferably, a second gear is fixedly sleeved on the outer wall of the first rotating drum, a first gear is meshedly connected to the bottom of the second gear, and the first gear is rotatably connected to one side of the support plate, a second pulley is fixedly connected to the surface of the first gear and one end corresponding to the transmission roller, and the two second pulleys are connected by a second transmission belt.

[0015] Preferably, the crease mechanism further comprises an arc-shaped shovel, which is fixedly connected to the support plate via a connecting rod, and the arc-shaped shovel is in contact with the surface of the first adsorption roller, and notches are provided on both sides of the arc-shaped shovel for the sanitary napkin wings to pass through.

[0016] Preferably, the positioning mechanism includes a support frame, which is fixedly connected to the top of the support seat on one side of the first adsorption roller located on the arc shovel, and the top of the support frame is fixedly connected to a row of upper pressure strips at the top upper surface of the conveyor belt, and the top of the support frame is fixedly connected to a row of lower pressure strips at the top lower surface of the conveyor belt.

[0017] Preferably, the upper pressure strip and the lower pressure strip are provided with installation grooves at positions corresponding to the conveyor belt surface, and the inner wall of the installation groove is rotatably connected to a guide wheel.

[0018] Preferably, the compacting mechanism includes a second adsorption roller, which is rotatably connected to the two support plates above the first adsorption roller through a second cylinder, and adsorption holes are provided on the surface of the second adsorption roller. A second negative pressure tube is rotatably connected to the inner wall of the second cylinder, and a second air intake port is provided on the second negative pressure tube at a position inside the second adsorption roller, and the second negative pressure tube is fixedly connected to the air inlet end of the negative pressure pump through an air inlet pipe, and a third gear is fixedly sleeved on the outer wall of the second cylinder, and the third gear is meshingly connected to the second gear.

[0019] Preferably, the compacting mechanism also includes two air blowing pipes, which are fixedly connected to the top of the arc shovel on both sides of the second adsorption roller through a mounting plate, and air ports are respectively opened on the corresponding sides of the two air blowing pipes. The two air blowing pipes are fixedly connected to the air outlet end of the negative pressure pump through an air outlet pipe, and a pressure relief valve is fixedly connected to the air outlet pipe.

[0020] Preferably, the compacting mechanism also includes a pressure roller, which is rotatably connected between the two support plates and is located above the second adsorption roller. The two ends of the pressure roller are respectively fixedly connected with a fourth gear, and the fourth gear is meshingly connected with the third gear. The two support plates are located on the side of the second adsorption roller away from the mounting plate and are fixedly connected with a slide through a connecting frame, and the top of the slide is in contact with the surface of the second adsorption roller, and one end of the bottom of the slide is in contact with the conveyor belt.

[0021] The beneficial effects are:

[0022] 1. The present invention sets a first adsorption roller. The negative pressure generated inside the first adsorption roller causes the adsorption holes on the surface to generate suction, so that when the sanitary napkin transported above the conveyor belt passes under the first adsorption roller, it will be adsorbed on the surface of the first adsorption roller by the adsorption holes of the first adsorption roller for fixation. Moreover, since the side suction grooves set at both ends of the first adsorption roller are also covered with adsorption holes, the wings on both sides of the adsorbed sanitary napkin that exceed the surface range of the first adsorption roller are adsorbed by the adsorption holes in the side suction groove area, so that the wings of the sanitary napkin are bent and creases are formed to facilitate subsequent folding. Moreover, the bending method by suction has higher stability than the bending method by blowing in the comparative scheme, because during suction bending, the sanitary napkin will first be adsorbed on the first adsorption roller for fixation, and then the wings of the sanitary napkin will be adsorbed and bent through the adsorption holes in the side side suction groove area, thereby avoiding the problem that the sanitary napkin is easily offset under the influence of the blown airflow due to the lack of fixing measures during the bending process by blowing, making the creases of the sanitary napkin wings asymmetric, resulting in poor bending effect.

[0023] 2. The present invention can improve the stability of sanitary napkins during transportation by arranging upper and lower pressure strips on the lower upper surface of the transport area at the top of the conveyor belt. In actual operation, the sanitary napkin is folded with its face upward and placed in the center on the conveyor belt at the position where the upper pressure strip is tilted for transportation. When the sanitary napkin enters the area where the upper and lower pressure strips are located, the upper and lower pressure strips will exert a certain squeezing force on the sanitary napkin to maintain stability during transportation and avoid the position of the sanitary napkin being offset during movement, resulting in poor subsequent bending effect. A guide wheel is provided on the part where the upper pressure strip contacts the sanitary napkin. By rolling the guide wheel to contact the sanitary napkin, the problem of excessive friction between the sanitary napkin and the upper pressure strip that hinders the transportation of the sanitary napkin can be avoided, so that the sanitary napkin can maintain its position on the surface of the conveyor belt when placed and be smoothly transported to the position of the first adsorption roller.

[0024] 3. The present invention can drive the pressure roller to rotate through the fourth gear and the third gear. When the second adsorption roller drives the adsorbed sanitary napkin to pass through the position below the pressure roller, the extrusion force generated between the second adsorption roller and the pressure roller will compact the wings of the sanitary napkin from the fold, and when the sanitary napkin compacted by the pressure roller on the surface of the second adsorption roller moves to the position at the top of the slide, since the top of the slide fits the surface of the second adsorption roller, the top of the slide will gradually insert into the position between the sanitary napkin and the second adsorption roller as the second adsorption roller rotates, so that the sanitary napkin is gradually peeled off from the surface of the second adsorption roller, and slides from the slide back to the conveyor belt for transportation, so as to facilitate the next step of the process. By automatically folding the wings of the sanitary napkin during transportation, the efficiency of production and processing can be improved while reducing the burden on workers.

[0025] 4. In the present invention, when the sanitary napkin is transferred from the first adsorption roller to the surface of the second adsorption roller, the folded wings are in a lifted state. If the lifted angle is too large, it may be difficult to compact the folded parts of the wings. By arranging air blowing pipes on both sides of the second adsorption roller and connecting the connected air outlet pipes to the air outlet end of the negative pressure pump, the air flow blown out from the air outlet end of the negative pressure pump is guided by the air outlet pipes and blown out from the air port of the air blowing pipe, thereby blowing down the lifted wings from the creases, thereby ensuring that the folded wings can be compacted smoothly and avoiding the problem of inconsistent creases that affects the folding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of the overall appearance of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the positioning mechanism in the present invention;

[0029] Figure 3 The present invention Figure 2 A magnified image of point A;

[0030] Figure 4 It is a structural schematic diagram of the crease mechanism in the present invention;

[0031] Figure 5 It is a connection relationship diagram between the negative pressure pump and various components in the present invention;

[0032] Figure 6 It is a schematic structural diagram of the first adsorption roller in the present invention;

[0033] Figure 7 It is a schematic structural diagram of the second adsorption roller in the present invention.

[0034] The accompanying drawings are described as follows: 1. support base; 2. conveyor belt; 3. transmission roller; 4. servo motor; 5. first pulley; 6. first transmission belt; 7. support frame; 8. upper pressure bar; 9. lower pressure bar; 10. mounting groove; 11. guide wheel; 12. support plate; 13. first rotating drum; 14. first adsorption roller; 15. side suction groove; 16. first gear; 17. second pulley; 18. second transmission belt; 19. second gear; 20. first Negative pressure pipe; 21. first air suction port; 22. arc shovel; 23. notch; 24. connecting rod; 25. air inlet pipe; 26. negative pressure pump; 27. second cylinder; 28. second adsorption roller; 29. ​​third gear; 30. second negative pressure pipe; 31. second air suction port; 32. mounting plate; 33. air blowing pipe; 34. air blowing port; 35. air outlet pipe; 36. pressure relief valve; 37. fourth gear; 38. pressure roller; 39. connecting frame; 40. slideway. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0036] See also Figure 1 - Figure 7As shown, the present invention provides a wing folding device for a sanitary napkin, comprising a support base 1, a conveyor belt 2 is arranged on the top of the support base 1, a driving roller 3 inside the conveyor belt 2 is rotatably connected to the top of the support base 1, a positioning mechanism is arranged on the top of the conveyor belt 2 for fixing the sanitary napkin transported by the conveyor belt 2, a crease mechanism is arranged above the conveyor belt 2 for bending the wings of the sanitary napkin to form creases, a compaction mechanism is arranged above the crease mechanism for folding the wings of the sanitary napkin, wherein the crease mechanism comprises two support plates 12, the two support plates 12 are respectively fixedly connected to the support base 1 at positions on both sides of the conveyor belt 2, a first adsorption roller 14 is rotatably connected to the position between the two support plates 12 through a first rotating drum 13, and both ends of the first adsorption roller 14 are opened. A side suction groove 15 is provided, and suction holes are opened on the surface of the first suction roller 14 and at the position of the side suction groove 15. Through the first suction roller 14, the negative pressure generated inside the first suction roller 14 causes the suction holes on the surface to generate suction, so that when the sanitary napkin transported above the conveyor belt 2 passes under the first suction roller 14, it will be adsorbed on the surface of the first suction roller 14 by the suction holes of the first suction roller 14 and fixed. Moreover, since the areas of the side suction grooves 15 provided at both ends of the first suction roller 14 are also covered with suction holes, the wings on both sides of the adsorbed sanitary napkin that exceed the surface range of the first suction roller 14 are adsorbed by the suction holes in the area of ​​the side suction grooves 15, so that the wings of the sanitary napkin are bent and creases are formed to facilitate subsequent folding. The inner wall of the first rotating drum 13 rotates The first suction roller 14 is provided with a first suction port 21, and the first suction roller 14 is provided with a first negative pressure pipe 20. The first negative pressure pipe 20 is fixedly connected to the air inlet end of the negative pressure pump 26 through the air inlet pipe 25. The negative pressure pump 26 is started to extract the air inside the first negative pressure pipe 20 through the air inlet pipe 25. Since the first negative pressure pipe 20 is connected to the inside of the first suction roller 14 through the first suction port 21, negative pressure is generated inside the first suction roller 14, so as to facilitate the adsorption of the sanitary napkin through the adsorption holes on the surface of the first adsorption roller 14. A servo motor 4 for driving the transmission roller 3 to rotate is fixedly connected to one side of the support seat 1. The corresponding ends of the two sets of transmission rollers 3 are fixedly connected to the first pulley 5, and the two first pulleys 5 are connected by the first transmission The servo motor 4 is started to drive one of the transmission rollers 3 to rotate, and the two first pulleys 5 are transmitted with the first transmission belt 6, so that the two transmission rollers 3 rotate synchronously, thereby driving the conveyor belt 2 to transport the sanitary napkins placed above. The outer wall of the first rotating drum 13 is fixedly sleeved with a second gear 19, and the lower part of the second gear 19 is meshedly connected with a first gear 16, and the first gear 16 is rotatably connected to one side of the support plate 12. The surface of the first gear 16 and the end corresponding to the transmission roller 3 are respectively fixedly connected with a second pulley 17, and the two second pulleys 17 are connected by a second transmission belt 18. When the conveyor belt 2 transports the sanitary napkin, its rotating transmission roller 3 will also drive the second pulley 17 to rotate in the same direction.The first gear 16 can be driven to rotate together through the transmission of the two second pulleys 17 and the second transmission belt 18, and the first adsorption roller 14 can be driven to rotate in the opposite direction through the second gear 19 meshing with the first gear 16, so that the moving directions of the first adsorption roller 14 and the conveyor belt 2 approaching each other are consistent, which can avoid the first adsorption roller 14 and the conveyor belt 2 approaching each other The surface presents opposite movement directions, resulting in the first adsorption roller 14 being affected by the friction between the surface of the conveyor belt 2 and the sanitary napkin when adsorbing the sanitary napkin, making the sanitary napkin easier to be adsorbed and peeled off.

[0037] In this embodiment, please refer to Figure 4 , Figure 6 The crease mechanism also includes an arc-shaped shovel 22, which is fixedly connected to the support plate 12 through a connecting rod 24, and the arc-shaped shovel 22 is in contact with the surface of the first adsorption roller 14, so that the adsorption holes of the part where the surface of the first adsorption roller 14 and the arc-shaped shovel 22 are in contact are blocked and lose the adsorption effect. Notches 23 for the sanitary napkin wings to pass through are provided on both sides of the arc-shaped shovel 22. Through the provided arc-shaped shovel 22, when the first adsorption roller 14 drives the sanitary napkin to rotate and pass through the arc-shaped shovel 22, the arc-shaped shovel 22 will be inserted into the position between the first adsorption roller 14 and the sanitary napkin, so that the first adsorption roller 14 is separated from the sanitary napkin.

[0038] For further information, see Figure 1 , Figure 2 , Figure 3 , Figure 4 The positioning mechanism includes a support frame 7, which is fixedly connected to the top of the support seat 1 on one side of the first adsorption roller 14 located at the arc shovel 22. The top of the support frame 7 is located at the position of the top upper surface of the conveyor belt 2 and is fixedly connected with a row of upper pressure strips 8. The top of the support frame 7 is located at the position of the top lower surface of the conveyor belt 2 and is fixedly connected with a row of lower pressure strips 9. The upper pressure strips 8 and the lower pressure strips 9 are provided with mounting grooves 10 at positions corresponding to the surface of the conveyor belt 2, and the inner wall of the mounting groove 10 is rotatably connected with a guide wheel 11. By arranging the upper pressure strips 8 and the lower pressure strips 9 on the lower upper surface of the top transport area of ​​the conveyor belt 2, the stability of the sanitary napkin during transportation can be improved. In actual operation, the sanitary napkin is folded with the side facing up. The sanitary napkin is placed centrally on the conveyor belt 2 at the position where the upper pressure strip 8 is tilted for transportation. When the sanitary napkin enters the area where the upper pressure strip 8 and the lower pressure strip 9 are located, the upper pressure strip 8 and the lower pressure strip 9 will exert a certain squeezing force on the sanitary napkin to maintain stability during transportation and avoid the position of the sanitary napkin being offset during movement, which may lead to poor subsequent bending effects. A guide wheel 11 is provided at the portion where the upper pressure strip 8 contacts the sanitary napkin. The guide wheel 11 rolls in contact with the sanitary napkin to avoid the problem of excessive friction between the sanitary napkin and the upper pressure strip 8 that hinders the transportation of the sanitary napkin, thereby allowing the sanitary napkin to maintain its position on the surface of the conveyor belt 2 when placed, and be smoothly transported to the position of the first adsorption roller 14.

[0039] For further information, see Figure 1 , Figure 4 , Figure 5 , Figure 6 The compacting mechanism includes a second adsorption roller 28, which is rotatably connected to a position above the first adsorption roller 14 between the two support plates 12 through a second cylinder 27, and an adsorption hole is provided on the surface of the second adsorption roller 28. A second negative pressure pipe 30 is rotatably connected to the inner wall of the second cylinder 27, and a second suction port 31 is provided at a position inside the second adsorption roller 28 of the second negative pressure pipe 30, and the second negative pressure pipe 30 is fixedly connected to the air inlet end of the negative pressure pump 26 through the air inlet pipe 25. Since the air inlet pipe 25 is also connected to the second negative pressure pipe 30 inside the second adsorption roller 28, when the air inlet pipe 25 extracts the air inside the first negative pressure pipe 20, it also extracts the air inside the second suction port 31. Air is drawn from the second suction port 31 so that the air inside the second suction roller 28 is also extracted, thereby generating negative pressure inside the second suction roller 28, causing the suction holes on the surface of the second suction roller 28 to generate suction force. A third gear 29 is fixedly sleeved on the outer wall of the second cylinder 27, and the third gear 29 is meshed and connected with the second gear 19. When the arc shovel 22 is inserted into the position between the first suction roller 14 and the sanitary napkin, the surface of the second suction roller 28 is closest to the surface of the first suction roller 14. At this time, because the arc shovel 22 is inserted into the sanitary napkin separated from the first suction roller 14, it will follow the rotation of the first suction roller 14 and the second suction roller 28 and gradually be adsorbed and adhered to the surface of the second suction roller 28.

[0040] Also, see Figure 4 , Figure 5 , Figure 7The compacting mechanism also includes two air blowing pipes 33, which are fixedly connected to the top of the arc shovel 22 at the positions on both sides of the second adsorption roller 28 through the mounting plate 32. Air blowing ports 34 are respectively opened on the corresponding sides of the two air blowing pipes 33, which are used to blow down the wings that may be raised on the surface of the sanitary napkin adsorbed by the second adsorption roller 28. The air blowing ports 34 here should be set to an upwardly inclined blowing angle to avoid the air flows blown out of the air blowing ports 34 on both sides from interfering with each other, which is not conducive to blowing down the wings. The two air blowing pipes 33 are fixedly connected to the air outlet end of the negative pressure pump 26 through the air outlet pipe 35, and the air outlet pipe 35 is fixedly connected to the pressure relief valve 36, which can be properly Pressure relief is to prevent excessive pressure in the air outlet pipe 35 from affecting the operation of the negative pressure pump 26. When the sanitary napkin is transferred from the first adsorption roller 14 to the surface of the second adsorption roller 28, the folded wings are in a tilted state. If the tilting angle is too large, it may be detrimental to the compaction of the folded parts of the wings. By arranging air blowing pipes 33 on both sides of the second adsorption roller 28 and connecting the air outlet pipes 35 to the air outlet end of the negative pressure pump 26, the air flow blown out from the air outlet end of the negative pressure pump 26 is guided by the air outlet pipe 35 and blown out from the air port 34 of the air blowing pipe 33, thereby blowing down the tilted wings from the folds to ensure that the folded wings can be compacted smoothly later.

[0041] In addition, see Figure 1 , Figure 4 , Figure 5 The compacting mechanism also includes a pressing roller 38, which is rotatably connected between the two support plates 12 and is located above the second adsorption roller 28. The two ends of the pressing roller 38 are respectively fixedly connected with fourth gears 37, and the fourth gear 37 is meshed and connected with the third gear 29. The pressing roller 38 can be driven to rotate by the fourth gear 37 and the third gear 29. When the second adsorption roller 28 drives the adsorbed sanitary napkin to pass through the position below the pressing roller 38, the extrusion force generated between the second adsorption roller 28 and the pressing roller 38 will compact the wings of the sanitary napkin from the fold to facilitate subsequent packaging. The two support plates 12 are located on the side of the second adsorption roller 28 away from the mounting plate 32 and are fixedly connected with a slide 40 through a connecting frame 39, and the slide 40 The top is in contact with the surface of the second adsorption roller 28, and one end of the bottom of the slide 40 is in contact with the conveyor belt 2. When the sanitary napkin compacted by the pressure roller 38 on the surface of the second adsorption roller 28 moves to the top of the slide 40, since the top of the slide 40 is in contact with the surface of the second adsorption roller 28, the top of the slide 40 will gradually insert into the position between the sanitary napkin and the second adsorption roller 28 as the second adsorption roller 28 rotates, so that the sanitary napkin is gradually peeled off from the surface of the second adsorption roller 28, and slides from the slide 40 back to the conveyor belt 2 for transportation, so as to facilitate the next step of the process. By automatically folding the wings of the sanitary napkin during transportation, the efficiency of production and processing can be improved while reducing the burden on workers.

[0042] How it works

[0043] When in use, start the servo motor 4 to drive one of the transmission rollers 3 to rotate, and transmit the two first pulleys 5 and the first transmission belt 6, so that the two transmission rollers 3 rotate synchronously, thereby driving the conveyor belt 2 to transport the sanitary napkin placed above, and the sanitary napkin is folded with the face upward and placed in the center on the conveyor belt 2 at the position where the upper pressure strip 8 is tilted for transportation. When the sanitary napkin enters the area where the upper pressure strip 8 and the lower pressure strip 9 are located, the upper pressure strip 8 and the lower pressure strip 9 will apply a certain squeezing force to the sanitary napkin to maintain stability during transportation and avoid the position of the sanitary napkin from being offset during movement. The part of the upper pressure strip 8 that contacts the sanitary napkin is provided with a guide wheel 11. The guide wheel 11 rolls in contact with the sanitary napkin to avoid the sanitary napkin and the upper pressure strip 8. The problem of excessive friction hindering the transportation of sanitary napkins is solved, so that the sanitary napkins remain in the position on the surface of the conveyor belt 2 when they are placed, and are smoothly transported to the position of the first adsorption roller 14, and the negative pressure pump 26 draws the air inside the first negative pressure pipe 20 through the air inlet pipe 25. Since the first negative pressure pipe 20 is connected with the inside of the first adsorption roller 14 through the first suction port 21, a negative pressure is generated inside the first adsorption roller 14. The negative pressure generated inside the first adsorption roller 14 causes the adsorption holes on the surface to generate a certain adsorption force, so that when the sanitary napkins transported above the conveyor belt 2 pass under the first adsorption roller 14, they will be adsorbed on the surface of the first adsorption roller 14 by the adsorption holes of the first adsorption roller 14 and fixed. In addition, since the areas of the side suction grooves 15 arranged at both ends of the first adsorption roller 14 are also covered with suction The attached holes make the wings of the sanitary napkin on both sides beyond the surface range of the first suction roller 14 be sucked by the suction holes in the side suction groove 15 area, so that the wings of the sanitary napkin are bent and creases are formed to facilitate subsequent folding. While the conveyor belt 2 is transporting the sanitary napkin, its rotating transmission roller 3 will also drive the second pulley 17 to rotate in the same direction. Through the transmission of the two second pulleys 17 and the second transmission belt 18, the first gear 16 can be driven to rotate together, and the first suction roller 14 can be driven to rotate in the opposite direction through the second gear 19 meshing with the first gear 16, so as to facilitate the absorption and peeling of the sanitary napkin from the surface of the conveyor belt 2. When the first suction roller 14 drives the sanitary napkin to rotate through the arc shovel 22, the arc shovel 22 will be inserted into the first suction roller 14 and The position between the sanitary napkins separates the first adsorption roller 14 from the sanitary napkin. Since the air inlet pipe 25 is also connected to the second negative pressure pipe 30 inside the second adsorption roller 28, when the air inlet pipe 25 extracts the air inside the first negative pressure pipe 20, it also extracts the air inside the second air inlet 31, so that the air inside the second adsorption roller 28 is also extracted from the second air inlet 31, thereby generating negative pressure inside the second adsorption roller 28, so that the adsorption holes on the surface of the second adsorption roller 28 generate adsorption force, and the second adsorption roller 28 also rotates due to the meshing of the third gear 29 and the second gear 19. When the arc shovel 22 is inserted into the position between the first adsorption roller 14 and the sanitary napkin, it is the position where the surface of the second adsorption roller 28 is closest to the surface of the first adsorption roller 14.At this time, due to the insertion of the sanitary napkin separated from the first suction roller 14 by the arc-shaped shovel 22, it will follow the rotation of the first suction roller 14 and the second suction roller 28 and gradually be adsorbed and attached to the surface of the second suction roller 28. The fourth gear 37 and the third gear 29 can drive the pressure roller 38 to rotate. When the second suction roller 28 drives the adsorbed sanitary napkin to pass through the position below the pressure roller 38, the extrusion force generated between the second suction roller 28 and the pressure roller 38 will compact the wings of the sanitary napkin from the folds, and when the sanitary napkin compacted by the pressure roller 38 on the surface of the second suction roller 28 moves to the position at the top of the slide 40, since the top of the slide 40 is in contact with the surface of the second suction roller 28, the top of the slide 40 will gradually insert into the sanitary napkin and the first suction roller 28 as the second suction roller 28 rotates. The position between the two adsorption rollers 28 causes the sanitary napkin to gradually peel off the surface of the second adsorption roller 28, and slide from the slideway 40 back to the conveyor belt 2 for transportation. When the sanitary napkin is transferred from the first adsorption roller 14 to the surface of the second adsorption roller 28, the folded wings are in a tilted state. If the tilting angle is too large, it may be disadvantageous for compacting the folded part of the wings. By arranging air blow pipes 33 on both sides of the second adsorption roller 28 and connecting the air outlet end of the negative pressure pump 26 with the connected air outlet pipe 35, the air flow blown out from the air outlet end of the negative pressure pump 26 is guided by the air outlet pipe 35 and blown out from the air port 34 of the air blow pipe 33, thereby blowing down the tilted wings from the fold, so as to ensure that the pressing roller 38 can smoothly compact the folded wings.

[0044] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A sanitary napkin wing folding device, characterized in that: It comprises a support seat (1), a conveyor belt (2) is arranged on the top of the support seat (1), and a transmission roller (3) inside the conveyor belt (2) is rotatably connected to the top of the support seat (1); A positioning mechanism is provided on the top of the conveyor belt (2) for fixing the sanitary napkin transported by the conveyor belt (2); A crease mechanism is provided above the conveyor belt (2) for folding the wings of the sanitary napkin to form creases; A compacting mechanism is provided above the crease mechanism for folding the wings of the sanitary napkin; The folding mechanism comprises two support plates (12), the two support plates (12) are respectively fixedly connected to the support seat (1) at positions on both sides of the conveyor belt (2), the position between the two support plates (12) is rotatably connected to a first adsorption roller (14) via a first rotating drum (13), side suction grooves (15) are provided at both ends of the first adsorption roller (14), and adsorption holes are provided on the surface of the first adsorption roller (14) and at the positions of the side suction grooves (15).

2. The wing folding device for a sanitary napkin according to claim 1, characterized in that: The inner wall of the first rotating drum (13) is rotatably connected to a first negative pressure pipe (20), and the first negative pressure pipe (20) is provided with a first suction port (21) at a position inside the first adsorption roller (14). The first negative pressure pipe (20) is fixedly connected to the air inlet end of a negative pressure pump (26) via an air inlet pipe (25).

3. The wing folding device for a sanitary napkin according to claim 1, characterized in that: A servo motor (4) for driving the transmission roller (3) to rotate is fixedly connected to one side of the support seat (1); corresponding ends of the two groups of transmission rollers (3) are fixedly connected to a first belt pulley (5), and the two first belt pulleys (5) are connected in transmission via a first transmission belt (6).

4. The wing folding device for a sanitary napkin according to claim 2, characterized in that: A second gear (19) is fixedly sleeved on the outer wall of the first rotating drum (13); a first gear (16) is meshedly connected to the lower portion of the second gear (19); and the first gear (16) is rotatably connected to one side of the support plate (12); a second pulley (17) is fixedly connected to the surface of the first gear (16) and one end corresponding to the transmission roller (3), respectively; and the two second pulleys (17) are connected in transmission via a second transmission belt (18).

5. The wing folding device for a sanitary napkin according to claim 1, characterized in that: The folding mechanism also includes an arc-shaped shovel (22), which is fixedly connected to the support plate (12) via a connecting rod (24), and the arc-shaped shovel (22) is in contact with the surface of the first adsorption roller (14), and notches (23) for the sanitary napkin wings to pass through are provided on both sides of the arc-shaped shovel (22).

6. The wing folding device for a sanitary napkin according to claim 1, characterized in that: The positioning mechanism comprises a support frame (7), wherein the support frame (7) is fixedly connected to the top of the support seat (1) at one side of the first adsorption roller (14) located on the arc-shaped shovel (22), the top of the support frame (7) is located at the upper surface of the top of the conveyor belt (2) and is fixedly connected to a row of upper pressure strips (8), and the top of the support frame (7) is located at the lower surface of the top of the conveyor belt (2) and is fixedly connected to a row of lower pressure strips (9).

7. The wing folding device for a sanitary napkin according to claim 6, characterized in that: The upper pressure strip (8) and the lower pressure strip (9) are both provided with mounting grooves (10) at positions corresponding to the surface of the conveyor belt (2), and the inner wall of the mounting groove (10) is rotatably connected to a guide wheel (11).

8. The wing folding device for a sanitary napkin according to claim 5, characterized in that: The compacting mechanism comprises a second adsorption roller (28), which is rotatably connected to a position above the first adsorption roller (14) between two support plates (12) through a second cylinder (27), and a surface of the second adsorption roller (28) is provided with adsorption holes, and the inner wall of the second cylinder (27) is rotatably connected with a second negative pressure pipe (30), and a second suction port (31) is provided on the second negative pressure pipe (30) at a position inside the second adsorption roller (28), and the second negative pressure pipe (30) is fixedly connected to the air inlet end of the negative pressure pump (26) through an air inlet pipe (25), and a third gear (29) is fixedly sleeved on the outer wall of the second cylinder (27), and the third gear (29) is meshingly connected with the second gear (19).

9. The wing folding device for a sanitary napkin according to claim 8, characterized in that: The compacting mechanism further comprises two air blowing pipes (33), the two air blowing pipes (33) being fixedly connected to the top of the arc-shaped shovel (22) at the positions on both sides of the second adsorption roller (28) through the mounting plate (32), and air blowing ports (34) are respectively provided on the corresponding sides of the two air blowing pipes (33), the two air blowing pipes (33) being fixedly connected to the air outlet end of the negative pressure pump (26) through the air outlet pipe (35), and the air outlet pipe (35) is fixedly connected to the pressure relief valve (36).

10. The wing folding device for a sanitary napkin according to claim 5, characterized in that: The compacting mechanism also includes a pressure roller (38), which is rotatably connected between the two support plates (12) and is located above the second adsorption roller (28). The two ends of the pressure roller (38) are respectively fixedly connected with a fourth gear (37), and the fourth gear (37) is meshingly connected with the third gear (29). The two support plates (12) are located on the side of the second adsorption roller (28) away from the mounting plate (32) and are fixedly connected with a slideway (40) through a connecting frame (39), and the top of the slideway (40) is in contact with the surface of the second adsorption roller (28), and one end of the bottom of the slideway (40) is in contact with the conveyor belt (2).

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