An absorbent core body production line

Abstract

The present application relates to the field of disposable sanitary product production equipment, and particularly relates to an absorbent core production line suitable for preparing an absorbent core with high absorption efficiency and high production efficiency, comprising a control device, an upper non-woven fabric unwinding device, a first folding device, a first gluing device, a bulky non-woven fabric unwinding device, a first blanking composite device, a lower non-woven fabric unwinding device, a second gluing device, a second blanking composite device, a second folding device, a welding device and a slitting device, the first folding device is arranged at the output end of the upper non-woven fabric unwinding device and is used for folding the transverse two sides of the upper non-woven fabric to form wrinkles, the first gluing device is arranged at the output end of the first folding device, the first blanking composite device is arranged at the output ends of the bulky non-woven fabric unwinding device and the first gluing device, the second gluing device is arranged at the output end of the lower non-woven fabric unwinding device, and the second blanking composite device is arranged at the output ends of the first blanking composite device and the second gluing device.

Description

Technical Field

[0001] This invention relates to the field of disposable hygiene product manufacturing equipment, and more particularly to an absorbent core production line. Background Technology

[0002] Absorbent cores are widely used in absorbent care products such as diapers and sanitary napkins. Traditional absorbent cores are made of a mixture of wood pulp fibers and superabsorbent polymers, which are then wrapped in non-woven fabric to form a block structure. This type of absorbent core is not only prone to clumping and breaking during use, but it is also thick and has poor breathability, reducing user comfort.

[0003] Currently, the most widely used absorbent cores on the market consist of two or three layers of non-woven fabric with a superabsorbent polymer sandwiched in between. The superabsorbent polymer is spread on the upper surface of one layer of non-woven fabric, and then another layer of non-woven fabric is bonded together with adhesive. This type of absorbent core is relatively thin, but the superabsorbent polymer is not easy to fix, which can easily cause the superabsorbent polymer to shift or leak, seriously affecting the water absorption efficiency.

[0004] Therefore, the applicant has developed a core production line suitable for preparing absorbent cores with high absorption efficiency and high production efficiency. Summary of the Invention

[0005] Therefore, in view of the above problems, the present invention provides an absorbent core production line that is suitable for preparing absorbent cores with high absorption efficiency and high production efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An absorbent core production line includes a control device, an upper non-woven fabric unwinding device, a first folding device, a first sizing device, a fluff non-woven fabric unwinding device, a first feeding and compounding device, a lower non-woven fabric unwinding device, a second sizing device, a second feeding and compounding device, a second folding device, a welding device, and a slitting device. The first folding device is arranged at the output end of the upper non-woven fabric unwinding device and is used to fold the transverse two sides of the upper non-woven fabric to form wrinkles. The first sizing device is arranged at the output end of the first folding device. The first feeding and compounding device is arranged at the output ends of the fluff non-woven fabric unwinding device and the first sizing device and is used to apply superabsorbent polymer particles on the upper surface of the fluff non-woven fabric and compound it with the upper non-woven fabric. The second sizing device is arranged at the output end of the lower non-woven fabric unwinding device. The second feeding and compounding device is arranged at the output ends of the first feeding and compounding device and the second sizing device and is used to apply superabsorbent polymer particles on the lower surface of the fluff non-woven fabric and compound it with the lower non-woven fabric. The second folding device is arranged at the output end of the second feeding and compounding device and is used to fold the transverse two sides of the lower non-woven fabric along the direction towards the upper non-woven fabric and attach them to the upper surface of the upper non-woven fabric. The welding device is arranged at the output end of the second folding device. The slitting device is arranged at the output end of the welding device and is used to slit out single absorbent cores. Through the first feeding and compounding device, the second feeding and compounding device, and the ultrasonic welding device, a sunken diversion groove is formed in the transverse middle of the absorbent core. The diversion groove includes a longitudinal diversion part and diversion parts provided at the longitudinal two ends of the longitudinal diversion part, and the longitudinal diversion part has an "丨" - shaped structure, and the diversion parts have a "V" - shaped structure.

[0008] Further, the first feeding and compounding device includes a frame, a driving mechanism, a transmission mechanism, a feeding bin, a feeding roller, a bottom roller, a convex roller, and a pressing roller arranged on the frame. The lower end of the feeding bin has a feeding port. A feeding component for facilitating uniform feeding is provided in the feeding bin and above the feeding port. The feeding roller is arranged below the feeding port. A plurality of feeding grooves are provided on the circumferential outer surface of the feeding roller. The bottom roller is arranged below the feeding roller. The convex roller and the pressing roller are respectively arranged on the circumferential sides of the bottom roller. A convex strip for pressing the diversion groove structure is provided on the convex roller. The driving mechanism drives the feeding roller, the bottom roller, the convex roller, and the pressing roller to rotate synchronously through the transmission mechanism.

[0009] Further, a groove adapted to the convex strip is provided on the bottom roller.

[0010] Furthermore, the transmission mechanism includes a first driving sprocket on the drive mechanism, a first driven sprocket on the bottom roller, a second driven sprocket on the pressure roller, a second driving sprocket on the pressure roller, a third driven sprocket on the feed roller, a driving gear on the bottom roller, and a driven gear on the cam roller. A first chain is wound on the first driving sprocket, the first driven sprocket, and the second driven sprocket, and a second chain is wound on the second driving sprocket and the third driven sprocket. The driving gear meshes with the driven gear.

[0011] Furthermore, the feeding assembly includes a first rotating shaft and a second rotating shaft rotatably disposed within a feeding bin. At least three first baffles are disposed on the outer circumferential surface surrounding the first rotating shaft, and each first baffle moves along the axial direction of the first rotating shaft. At least three second baffles are disposed on the outer circumferential surface surrounding the second rotating shaft, and each second baffle moves along the axial direction of the second rotating shaft. When the first rotating shaft and the second rotating shaft rotate in opposite directions, two adjacent first baffles and two adjacent second baffles form a certain measuring groove.

[0012] Furthermore, the feeding roller includes a shaft, a roller body sleeved on the shaft, retaining rings sleeved on the roller body and distributed at both ends of the roller body's axial direction, and an air distribution plate. The feeding groove is provided on the outer circumferential surface of the roller body and is distributed between the two retaining rings. The roller body is provided with a flow channel communicating with each feeding groove, and the air distribution plate is communicating with each flow channel.

[0013] Furthermore, the welding device includes two welding mechanisms, each of which includes a support frame, a welding roller, a welding mating roller, a welding assembly, a first drive motor, a second drive motor, a support assembly, a clamping adjustment assembly, and a gap adjustment assembly. The axial ends of the welding roller are mounted on the support frame via first bearing seats, and the welding roller has a welding area in its axial middle section. The first drive motor is connected to the welding roller. One axial end of the welding mating roller is mounted on the support frame via a second bearing seat and is located below the welding roller. The other axial side of the welding mating roller has a welding mating area. The axial length of the welding area is less than twice the axial length of the welding mating area, while the axial length of the welding area is greater than that of the welding mating area. The welding assembly is mounted on the welding mating roller. The second drive motor is connected to the welding mating roller via a transmission assembly. The support assembly is located on the lower side of the welding mating roller to support its rotation. The pressure adjustment assembly is located at the upper end of the support frame to adjust the pressure of the welding roller. The gap adjustment assembly is located between the first bearing seat and the second bearing seat. The welding mating rollers on the two welding mechanisms are respectively distributed at both ends of the axial direction of the welding roller.

[0014] Furthermore, the support assembly includes two support rollers, which are mounted on the support frame and distributed below the welding mating roller. They are symmetrically distributed along the central axis of the welding mating roller, and the central axis of the two support rollers is parallel to the central axis of the welding mating roller. When the welding mating roller is installed, it abuts against the two support rollers.

[0015] Furthermore, each of the support rollers includes a rotating shaft trussing on a support frame, a support roller body sleeved on the rotating shaft, and a bearing disposed between the rotating shaft and the support roller body.

[0016] By adopting the aforementioned technical solution, the beneficial effects of this invention are as follows: In this absorbent core production line, the first feeding and composite device enables the upper surface of the bulky nonwoven fabric to be grooved, a superabsorbent polymer material to be applied, and to be composited with the upper nonwoven fabric, resulting in high processing precision. Then, the second feeding and composite device enables the lower surface of the bulky nonwoven fabric to be grooved, a superabsorbent polymer material to be applied, and to be composited with the upper nonwoven fabric. This design reduces the need for calibration in various devices during the overall material transport, thereby improving the production line's efficiency. Furthermore, the formed absorbent core has a recessed guide groove, allowing the user's urine to enter... At the diversion channel, since no superabsorbent polymer (SAP) material is sprinkled there, and welding points are ultrasonically welded for fixing the upper, bulky, and lower nonwoven fabrics, the urine in the diversion channel preferentially diffuses and flows along the longitudinal direction of the channel. Excess urine overflows from the side of the channel and is absorbed by the SAP material. Furthermore, the urine in the channel seeps outward from the side wall and is absorbed by the first and second SAP materials around it. This allows the urine to flow preferentially, increasing its diffusion range and thus increasing the absorption rate, i.e., high absorption efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the first feeding and composite device in an embodiment of the present invention;

[0019] Figure 3 This is a top view of the first feeding and composite device in an embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional view of the feeding hopper and feeding assembly in an embodiment of the present invention;

[0021] Figure 5 This is a cross-sectional view of the feeding bin and feeding roller in an embodiment of the present invention;

[0022] Figure 6 This is a three-dimensional structural schematic diagram of the welding mechanism in an embodiment of the present invention;

[0023] Figure 7 This is a front view schematic diagram of the welding mechanism in an embodiment of the present invention;

[0024] Figure 8 This is a front view schematic diagram of another welding mechanism in an embodiment of the present invention;

[0025] Figure 9 This is a cross-sectional view of the support roller in an embodiment of the present invention;

[0026] Figure 10 This is a front view structural diagram of the first folding device in an embodiment of the present invention;

[0027] Figure 11 This is a top view of the structure of the first folding device in an embodiment of the present invention;

[0028] Figure 12 This is a top view of the folding plate in an embodiment of the present invention;

[0029] Figure 13 This is a cross-sectional view of the folding plate in an embodiment of the present invention. Detailed Implementation

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0031] The embodiments of the present invention are as follows:

[0032] refer to Figure 1As shown in the figure, an absorbent core production line includes a control device, an upper non-woven fabric unwinding device 1, a first folding device 2, a first sizing device 3, a fluff non-woven fabric unwinding device 4, a first feeding and compounding device 5, a lower non-woven fabric unwinding device 6, a second sizing device 7, a second feeding and compounding device 8, a second folding device 9, a welding device 10, and a slitting device 11. The first folding device 2 is arranged at the output end of the upper non-woven fabric unwinding device 1 and is used to fold the transverse two sides of the upper non-woven fabric to form wrinkles. The first sizing device 3 is arranged at the output end of the first folding device 2. The first feeding and compounding device 5 is arranged at the output ends of the fluff non-woven fabric unwinding device 4 and the first sizing device 3 and is used to apply superabsorbent polymer particles on the upper surface of the fluff non-woven fabric and compound it with the upper non-woven fabric. The second sizing device 7 is arranged at the output end of the lower non-woven fabric unwinding device 6. The second feeding and compounding device 8 is arranged at the output ends of the first feeding and compounding device 5 and the second sizing device 7 and is used to apply superabsorbent polymer particles on the lower surface of the fluff non-woven fabric and compound it with the lower non-woven fabric. The second folding device 9 is arranged at the output end of the second feeding and compounding device 8 and is used to fold the transverse two sides of the lower non-woven fabric along the direction towards the upper non-woven fabric and attach them to the upper surface of the upper non-woven fabric. The welding device 10 is arranged at the output end of the second folding device 9. The slitting device 11 is arranged at the output end of the welding device 10 and is used to slit out single absorbent cores. Through the first feeding and compounding device 5, the second feeding and compounding device 8, and the ultrasonic welding device 10, a sunken diversion groove is formed in the transverse middle of the absorbent core. The diversion groove includes a longitudinal diversion part and diversion parts arranged at the longitudinal two ends of the longitudinal diversion part, and the longitudinal diversion part has an "I" shape structure, and the diversion parts have a "V" shape structure.

[0033] This absorbent core production line enables the upper surface of the fluff non-woven fabric to be grooved, the superabsorbent polymer material to be applied, and the upper non-woven fabric to be laminated through the setting of the first feeding and laminating device 5, resulting in high processing accuracy. Then, through the second feeding and laminating device 8, the lower surface of the fluff non-woven fabric is grooved, the superabsorbent polymer material is applied, and the upper non-woven fabric is laminated. With such a design, the calibration in each device during the overall material transportation can be reduced, thereby improving the production efficiency of the production line. Moreover, the formed absorbent core has a sunken diversion groove. When the user's urine is input at the diversion groove, since the superabsorbent polymer material is not spread at the diversion groove and there are welding points for fixing the upper non-woven fabric, fluff non-woven fabric, and lower non-woven fabric by ultrasonic welding, the urine in the diversion groove preferentially diffuses and diverts along the longitudinal direction of the diversion groove. The excess urine overflows from the side of the diversion groove and is absorbed by the superabsorbent polymer material. Furthermore, the urine in the diversion groove seeps outwards from the side wall of the diversion groove and is absorbed by the first superabsorbent polymer material and the second superabsorbent polymer material on its periphery, enabling the urine to be preferentially diverted, increasing its diffusion range, and thus improving the absorption speed. Additionally, the diversion groove includes a longitudinal diversion portion in an "I" shape structure and diversion portions in a "V" shape structure provided at the longitudinal two ends of the longitudinal diversion portion. When the urine is diverted to the end, the amount is relatively small. Through the setting of the diversion portions, the small amount of urine can be diverted, balancing the expansion thickness of the absorbent core body in this area, making this area more conformable to the user's hip, and improving the comfort of use.

[0034] Specifically, refer to Figures 2 to 5As shown, the first feeding composite device 5 includes a frame 51, a drive mechanism 52 and a transmission mechanism 53 mounted on the frame 51, a feeding bin 54, a feeding roller 55, a bottom roller 56, a convex roller 57, and a pressure roller 58. The lower end of the feeding bin 52 has a feeding port 541. Inside the feeding bin 52 and above the feeding port 541, there is a feeding assembly 59 for facilitating uniform feeding. The feeding roller 55 is located below the feeding port 541. The outer circumferential surface of the feeding roller 55 has a plurality of feeding grooves 551. The bottom roller 56 is located below the feeding roller 55. The convex roller 57 and the pressure roller 58 are respectively located on the periphery of the bottom roller 56. The convex roller 57 has a protrusion 571 for pressing the guide groove structure. The drive mechanism 52 drives the feeding roller 55 and the bottom roller 56 through the transmission mechanism 53. 6. The convex roller 57 and the pressure roller 58 rotate synchronously. The bottom roller 56 is provided with a groove 561 that matches the convex strip 571. The transmission mechanism 53 includes a first driving sprocket on the drive mechanism 52, a first driven sprocket 532 on the bottom roller 56, a second driven sprocket 533 on the pressure roller 58, a second driving sprocket 534 on the pressure roller 58, a third driven sprocket 535 on the feed roller 55, a driving gear 536 on the bottom roller 56, and a driven gear 537 on the convex roller 57. A first chain is wound on the first driving sprocket, the first driven sprocket 532, and the second driven sprocket 533. A second chain is wound on the second driving sprocket 534 and the third driven sprocket 535. The driving gear 536 meshes with the driven gear 537.

[0035] By mounting the feeding bin 54, feeding roller 55, convex roller 57, bottom roller 56, and pressure roller 58 on the same frame 51, and by having the feeding roller 55, convex roller 57, and pressure roller 58 arranged around the bottom roller 56 with the bottom roller 56 as the center, and all of them cooperating with the bottom roller 56, the equipment structure is compact. In use, the feeding assembly 59 is located in the feeding bin 54 and above the feeding port 541, allowing the superabsorbent polymer material to be fed in sufficient and uniform quantity from the feeding port 541 onto the feeding roller 55. The bulky nonwoven fabric is clamped and fed in by the cooperation of the convex roller 57 and the bottom roller 56. The process involves pressing the bulky nonwoven fabric together, and then transferring the superabsorbent polymer material from the feeding trough 551 to the bulky nonwoven fabric by rotating the feeding roller 55. This fixes the superabsorbent polymer material in the gaps of the bulky nonwoven fabric and maintains uniform filling, resulting in high product quality. The surface nonwoven fabric is then laminated with the bulky nonwoven fabric by the pressure roller 58, making it convenient to use. At the same time, the transmission mechanism 53 keeps the feeding roller 55, bottom roller 56, convex roller 57, and pressure roller 58 running synchronously, eliminating the need for debugging and further improving the equipment's operating speed, thus greatly enhancing its processing efficiency.

[0036] Furthermore, the feeding assembly 59 includes a first rotating shaft 591 and a second rotating shaft 592 rotatably disposed within the feeding bin 54. Six first baffles 593 are disposed around the outer circumference of the first rotating shaft 591, each first baffle 593 moving along the axial direction of the first rotating shaft 591. Six second baffles 594 are disposed around the outer circumference of the second rotating shaft 592, each second baffle 594 moving along the axial direction of the second rotating shaft 592. When the first rotating shaft 591 and the second rotating shaft 592 rotate towards each other, adjacent first baffles 593 and two second baffles 594 form a certain measuring groove 595. This arrangement... The second rotating shaft 592 is positioned at the upper right corner of the first rotating shaft 591. When the first rotating shaft 591 and the second rotating shaft 592 rotate in opposite directions, the second baffle 594 on the side closer to the first rotating shaft 591 moves downward, pushing the superabsorbent polymer material in the feeding bin 54 towards each other. With the assistance of the first baffle 593 nearby, quantitative extrusion is achieved. Through the cooperation of the baffles located below the first baffle 593 and the second baffle 594, the superabsorbent polymer material is filled into the quantitative groove 595, making the feeding amount of superabsorbent polymer material uniform and facilitating the feeding of superabsorbent polymer material, thereby improving the quality of the product.

[0037] Furthermore, the feeding roller 55 includes a shaft 552, a roller body 553 sleeved on the shaft 552, retaining rings 554 sleeved on the roller body 553 and distributed at both ends of the roller body 553 axially, and an air distribution plate 555. The feeding groove 551 is provided on the outer circumferential surface of the roller body 553 and is distributed between the two retaining rings 554. The roller body 553 is provided with a flow channel 556 communicating with each feeding groove 551. The air distribution plate 555 is connected to each flow channel 556. The air distribution plate 555 causes the feeding groove 551 to form a negative pressure adsorption, so that the superabsorbent polymer material quantitatively fed by the feeding component 59 is fed into the feeding groove 551 on the feeding roller 55 through the feeding port 541, and can better adhere to the feeding groove 551, improving the uniformity of the superabsorbent polymer material in the feeding groove 551.

[0038] In this embodiment, the structure of the second feeding composite device 8 can be the same as that of the first feeding composite device 5. Alternatively, the structure of the groove 561 that cooperates with the convex strip 571 can be omitted on the bottom roller 56, or the convex strip 571 can be omitted on the convex roller 57, and the structure of the groove 561 that cooperates with the convex strip 571 can be omitted on the bottom roller 56.

[0039] For details, please refer to Figures 6 to 9As shown, the welding device 10 includes two welding mechanisms. Each welding mechanism includes a support frame 101, a welding roller 102, a welding mating roller 103, a welding assembly 104, a first drive motor, a second drive motor, a support assembly, a pressure adjustment assembly 106, and a gap adjustment assembly 107. The axial ends of the welding roller 102 are mounted on the support frame 101 via first bearing seats 108. The welding roller 102 has a welding area 110 in its axial middle. The first drive motor is connected to the welding roller 102. One axial end of the welding mating roller 103 is mounted on the support frame 101 via a second bearing seat 109 and is located below the welding roller 102. The other axial side of the welding mating roller 103 has a welding mating area 120. The axial length of the welding area 110 is less than twice the axial length of the welding mating area 120, while the axial length of the welding area 110 is greater than that of the welding mating area 120. The welding assembly 104 is mounted on the welding mating roller 103. The second drive motor is connected to the welding mating roller 103 via a transmission assembly. The support assembly is located on the lower side of the welding mating roller 103 to support its rotation. The pressure adjustment assembly 106 is located at the upper end of the support frame 101 to adjust the pressure of the welding roller 102. The gap adjustment assembly 107 is located between the first bearing seat 108 and the second bearing seat 109. The welding mating rollers 103 on the two welding mechanisms are respectively distributed at both ends of the axial direction of the welding roller 102.

[0040] By employing two welding mechanisms in tandem, the product's transverse sides are welded separately, accommodating thicker products and faster welding speeds. This results in strong welds and high product quality. Furthermore, the axial length of the welding area 110 on a single welding mechanism is less than twice the axial length of the welding mating area 120, while the axial length of the welding area 110 is greater than that of the welding mating area 120. This allows for welding in the transverse middle region of the product, with two welding operations. This ensures the guide groove in the transverse middle region is welded into shape and is firmly secured. Simultaneously, the structure uses a support component to support the rotation of the welding mating roller 103, preventing radial runout during high-speed rotation and ensuring the clamping force between the welding mating roller 103 and the welding roller 102. This improves the quality of the welded seam. Compared to traditional welding devices, this eliminates the need for a welding mating roller 103 and ensures equipment operational stability, thereby reducing production costs.

[0041] Furthermore, the support assembly includes two support rollers 105, which are mounted on the support frame 101. The two support rollers 105 are distributed below the welding mating roller 103 and symmetrically distributed along the central axis of the welding mating roller 103. The central axis of the two support rollers 105 is parallel to the central axis of the welding mating roller 103. When the welding mating roller 103 is installed, it abuts against the two support rollers 105. Each support roller 105 includes a rotating shaft 1051 trussing on the support frame 101 and a sleeve. The support roller 1052 on the rotating shaft 1051 and the bearing 1053 between the rotating shaft 1051 and the support roller 1052, when the welding mating roller 103 is installed, the welding mating roller 103 abuts against the two support rollers 105, and the welding roller 102 abuts against the welding mating roller 103, so that the welding mating roller 103, the welding roller 102 and the two support rollers 105 form a triangular support structure, which improves the stability of the high-speed rotation of the welding mating roller 103, can improve the operating speed of the equipment, and thus improve production efficiency.

[0042] In this embodiment, reference Figures 10 to 13 As shown, the first folding device 2 includes a bracket 21, a left folding mechanism 22, a right folding mechanism 23, a connecting mechanism 24, a negative pressure adsorption conveying mechanism 25, and a shaping roller 26. The connecting mechanism 24 is mounted on the bracket 21 and connects the left folding mechanism 22 and the right folding mechanism 23. The right folding mechanism 23 is located at the output end of the left folding mechanism 22, and the negative pressure adsorption conveying mechanism 25 is located at the output end of the right folding mechanism 23. The negative pressure adsorption conveying mechanism 25 has a conveying surface, and the shaping roller 26 is distributed on the conveying surface of the negative pressure adsorption conveying mechanism 25.

[0043] The upper nonwoven fabric is folded into pleats on both sides by the left folding mechanism 22 and the right folding mechanism 23 in sequence. Then, the pleats are fixed by the cooperation of the negative pressure adsorption conveying mechanism 25 and the shaping roller 26, so as to prevent them from spreading out during the transmission process and improve product quality. At the same time, the separate folding method of the left folding mechanism 22 and the right folding mechanism 23 reduces the force acting on the upper nonwoven fabric and improves the folding accuracy.

[0044] The connecting mechanism 24 includes a rotating rod 241, a first threaded rod 242, a second threaded rod 243, a first mounting base 244, a second mounting base 245, a first sliding rod 246, a second sliding rod 247, a first bevel gear 248, a second bevel gear 249, a third bevel gear 250, and a fourth bevel gear 251. The rotating rod 241 is rotatably mounted on the bracket 241. The first bevel gear 248 and the second bevel gear 249 are located at the axial ends of the rotating rod 241. The first threaded rod 242 and the second threaded rod 243 are rotatably mounted on the bracket 241 and are respectively distributed around the first bevel gear 248 and the second bevel gear 249. 242. The central axis of the second threaded rod 243 is perpendicular to the orthographic projection of the central axis of the rotating rod 241. The third bevel gear 250 is disposed on the first threaded rod 242 and meshes with the first bevel gear 248. The fourth bevel gear 251 is disposed on the second threaded rod 243 and meshes with the second bevel gear 249. The first sliding rod 246 is disposed on the periphery of the first threaded rod 242 and is distributed parallel to the first threaded rod 242. The first mounting base 244 is provided with a first threaded hole 252 and a first through hole 253. The first mounting base 244 is threadedly connected to the first threaded rod 242 through the first threaded hole 252, and the first sliding rod 246 passes through the first threaded rod 242. A first through hole 253 is provided. The second slide rod 247 is disposed on the periphery of the second threaded rod 243 and is distributed parallel to the second threaded rod 243. The second mounting base 245 is provided with a second threaded hole 254 and a second through hole 255. The second mounting base 245 is threadedly connected to the second threaded rod 243 through the second threaded hole 254, and the second slide rod 247 passes through the second through hole 255. A handle 256 is provided in the middle of the rotating rod 241. The left folding mechanism 22 is disposed on the first mounting base 244, and the right folding mechanism 23 is disposed on the second mounting base 245. Both the left folding mechanism 22 and the right folding mechanism 23 have folding plates 200. The folding plate 200 includes a first plate 210 distributed horizontally, a second plate 220 disposed on the outer edge of the first plate 210, and a third plate 230 disposed on the free edge of the second plate 220. The second plate 220 has a triangular structure, and the length of the second plate 220 is smaller than the length of the first plate 210. The second plate 220 is distributed at the output end of the first plate 210. The second plate 220 is inclined, such that the included angle between the first plate 210 and the second plate 220 is 15° to 45°, preferably 20°. The third plate 230 has a curved structure, and the concave surface of the third plate 230 faces outward.

[0045] By rotating the throttle 241, the first bevel gear 248 and the second bevel gear 249 on the throttle 241 mesh with the third bevel gear 250 and the fourth bevel gear 251 respectively, thereby driving the first threaded rod 242 and the second threaded rod 243 to rotate synchronously. The first mounting seat 244 on the first threaded rod 242 moves along the axial direction of the first threaded rod 242 through the limiting and guiding function of the first slide rod 246. The second mounting seat 245 on the second threaded rod 243 moves along the axial direction of the second threaded rod 243 through the limiting and guiding function of the second slide rod 247. In this way, the first mounting seat 244 and the second mounting seat 245 move in opposite directions, so that the folding accuracy of the left folding mechanism 22 and the right folding mechanism 23 is high. Furthermore, the setting of the folding plate 200 provides a buffer space for the upper non-woven fabric during the folding process, reducing the tension of the upper non-woven fabric and maintaining its good elasticity, thus ensuring surface comfort during use.

[0046] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. An absorber core production line, characterized in that: It includes a control device, an upper non-woven fabric unwinding device, a first folding device, a first sizing device, a fluffy non-woven fabric unwinding device, a first feeding and compounding device, a lower non-woven fabric unwinding device, a second sizing device, a second feeding and compounding device, a second folding device, a welding device and a slitting device. The first folding device is arranged at the output end of the upper non-woven fabric unwinding device and is used for folding wrinkles on the lateral sides of the upper non-woven fabric. The first sizing device is arranged at the output end of the first folding device. The first feeding and compounding device is arranged at the output ends of the fluffy non-woven fabric unwinding device and the first sizing device and is used for applying polymer absorbent resin particles on the upper surface of the fluffy non-woven fabric and compounding it with the upper non-woven fabric. The second sizing device is arranged at the output end of the lower non-woven fabric unwinding device. The second feeding and compounding device is arranged at the output ends of the first feeding and compounding device and the second sizing device and is used for applying polymer absorbent resin particles on the lower surface of the fluffy non-woven fabric and compounding it with the lower non-woven fabric. The second folding device is arranged at the output end of the second feeding and compounding device and is used for folding the lateral sides of the lower non-woven fabric along the direction towards the upper non-woven fabric and attaching them to the upper surface of the upper non-woven fabric. The welding device is arranged at the output end of the second folding device. The slitting device is arranged at the output end of the welding device and is used for slitting out single absorbent cores. Through the first feeding and compounding device, the second feeding and compounding device and the ultrasonic welding device, a sunken diversion groove is formed in the lateral middle of the absorbent core. The diversion groove includes a longitudinal diversion part and diversion parts arranged at the longitudinal two ends of the longitudinal diversion part, and the longitudinal diversion part is in an "I" shape structure, and the diversion part is in a "V" shape structure; The first feeding and compounding device includes a frame, a driving mechanism, a transmission mechanism, a feeding bin, a feeding roller, a bottom roller, a convex roller and a pressing roller arranged on the frame. The lower end of the feeding bin has a feeding port. A feeding component for facilitating uniform feeding is arranged in the feeding bin and above the feeding port. The feeding roller is arranged below the feeding port. A plurality of feeding grooves are arranged on the circumferential outer surface of the feeding roller. The bottom roller is arranged below the feeding roller. The convex roller and the pressing roller are respectively arranged on the peripheral sides of the bottom roller. Convex strips for pressing the diversion groove structure are arranged on the convex roller. The driving mechanism drives the feeding roller, the bottom roller, the convex roller and the pressing roller to rotate synchronously through the transmission mechanism.

2. The absorber core production line according to claim 1, characterized in that: Grooves adapted to the convex strips are arranged on the bottom roller.

3. The absorber core production line according to claim 1, characterized in that: The transmission mechanism includes a first driving sprocket arranged on the driving mechanism, a first driven sprocket arranged on the bottom roller, a second driven sprocket arranged on the pressing roller, a second driving sprocket arranged on the pressing roller, a third driven sprocket arranged on the feeding roller, a driving gear arranged on the bottom roller and a driven gear arranged on the convex roller. A first chain is wound around the first driving sprocket, the first driven sprocket and the second driven sprocket. A second chain is wound around the second driving sprocket and the third driven sprocket. The driving gear meshes with the driven gear.

4. The absorber core production line according to claim 1, characterized in that: The feeding assembly includes a first rotating shaft and a second rotating shaft rotatably disposed within a feeding bin. At least three first baffles are disposed on the outer circumferential surface surrounding the first rotating shaft, and each first baffle moves along the axial direction of the first rotating shaft. At least three second baffles are disposed on the outer circumferential surface surrounding the second rotating shaft, and each second baffle moves along the axial direction of the second rotating shaft. When the first rotating shaft and the second rotating shaft rotate in opposite directions, two adjacent first baffles and two adjacent second baffles form a certain measuring groove.

5. The absorber core production line according to claim 4, characterized in that: The feeding roller includes a shaft, a roller body sleeved on the shaft, retaining rings sleeved on the roller body and distributed at both ends of the roller body's axial direction, and an air distribution plate. The feeding groove is provided on the outer circumferential surface of the roller body and is distributed between the two retaining rings. The roller body is provided with a flow channel communicating with each feeding groove, and the air distribution plate is communicating with each flow channel.

6. The absorber core production line according to any one of claims 1 to 5, characterized in that: The welding device includes two welding mechanisms, each of which includes a support frame, a welding roller, a welding mating roller, a welding assembly, a first drive motor, a second drive motor, a support assembly, a clamping adjustment assembly, and a gap adjustment assembly. The axial ends of the welding roller are mounted on the support frame via first bearing seats, and the welding roller has a welding area in its axial middle section. The first drive motor is connected to the welding roller. One axial end of the welding mating roller is mounted on the support frame via a second bearing seat and is located below the welding roller. The other axial side of the welding mating roller has a welding mating area. The axial length dimension of the welding area is less than twice the axial length dimension of the welding mating area, and the axial length dimension of the welding area is greater than the axial length dimension of the welding mating area. The welding assembly is mounted on the welding mating roller. The second drive motor is connected to the welding mating roller via a transmission assembly. The support assembly is located on the lower side of the welding mating roller to support its rotation. The pressure adjustment assembly is located at the upper end of the support frame to adjust the pressure of the welding roller. The gap adjustment assembly is located between the first bearing seat and the second bearing seat. The welding mating rollers located on the two welding mechanisms are respectively distributed at both ends of the axial direction of the welding roller.

7. The absorber core production line according to claim 6, characterized in that: The support assembly includes two support rollers, which are mounted on a support frame. The two support rollers are distributed below the welding mating roller and are symmetrically distributed along the central axis of the welding mating roller. The central axis of the two support rollers is parallel to the central axis of the welding mating roller. When the welding mating roller is installed, the welding mating roller abuts against the two support rollers.

8. The absorber core production line according to claim 7, characterized in that: Each of the support rollers includes a rotating shaft trussing on a support frame, a support roller body sleeved on the rotating shaft, and a bearing disposed between the rotating shaft and the support roller body.

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