Diaper production cutting device and diaper production cutting system

Abstract

The invention discloses a diaper production cutting device and a diaper production cutting system, and belongs to the technical field of diaper production. The diaper production cutting device comprises a machine body, a rotating disc and a plurality of cutting mechanisms; the cutting mechanism comprises a mounting frame and a connecting frame on the mounting frame; the connecting frame is provided with two sections of lead screws with opposite threads and a second motor, and the two sections are sleeved with a sleeve; the upper pressing plate and the connecting seat are respectively fixed with the two sleeves and are respectively connected with the connecting frame in a sliding manner through a second guide rail; the connecting seat is rotationally connected with a lower pressing plate; a cutter is mounted on the lower side of the upper pressing plate; a heat sealing seat is mounted on the inner side of the cutter; a cutter groove is formed in the upper side of the lower pressing plate. The principle of'plane relative static heat sealing cutting 'is adopted on a continuous diaper production line, cutting precision can be effectively improved, parameter adjusting difficulty is reduced, edge sealing pressure can be more evenly distributed, the problem of edge sealing virtual adhesion is effectively solved, edge sealing quality is improved, a cutter of the device is slow in abrasion and convenient to disassemble and overhaul, maintenance cost and time are effectively reduced, and production efficiency is improved. The operation efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of diaper production technology, specifically a diaper production cutting device and diaper production cutting system. Background Technology

[0002] Diapers (common types include disposable diapers, pull-ups, etc.) are disposable absorbent hygiene products. Their core function is to quickly lock in urine and feces, keeping the skin dry. They are mainly used for infants and young children, but can also be used for incontinent adults. They are a common product in modern nursing care.

[0003] The main steps in diaper production include: 1. Absorbent core (absorbent core layer) molding: The core is the core absorbent component of the diaper, and its molding quality directly determines its absorbency. The main molding steps are raw material mixing, vacuum spreading, pressing and thickness setting, and dust-free wrapping; 2. Multi-layer material lamination and positioning: This involves sequentially stacking all layered materials such as the surface layer, distribution layer, core, and bottom film, while simultaneously positioning the elastic components and Velcro. This is crucial for transforming the diaper from a "single-layer material" into a "complete prototype." The entire process is completed by an automated lamination machine, with the amount of glue and lamination precision controlled by a computer; 3. Cutting, sealing, and molding: The laminated diaper is a continuous roll, which needs to be cut into individual pieces according to preset specifications, and the side edges are sealed, leak-proof side panels are formed, and the waistband is cut; 4. Packaging.

[0004] Traditionally, rotary heat-sealing cutting machines are used for cutting and sealing diapers. While these machines can achieve high-speed synchronous heat-sealing and cutting and are suitable for continuous production lines, their inherent drawbacks in practical applications are limited by their structural design, working principle, and material properties. Furthermore, they suffer from practical limitations in production, specifically: 1. Cutting accuracy decreases with rotational speed, and slight deviations are prone to occur. The roller cutter is a dynamic meshing cutter, which needs to be completely synchronized with the production line traction speed. When the high-speed line speed increases, the rotational inertia of the roller cutter increases, which can easily lead to "speed lag" and increase the deviation of the cutting length. In addition, the roller cutter moves in a circular motion and the contact with the blank is "line contact". The perpendicularity of the cutter for narrow edge sealing is slightly worse, and slight bevels are prone to occur.

[0005] 2. The parameters of heat sealing and cutting are coupled, making adjustment difficult. The heat sealing roller and cutting blade of the rotary cutter are integrated into the same mold base, and the temperature, pressure and speed are coupled and correlated with each other, resulting in a low fault tolerance.

[0006] 3. Uneven edge sealing pressure distribution can easily lead to localized poor adhesion. The hot sealing roller of the roller is cylindrical, and the pressure between it and the lower die silicone roller is slightly greater in the middle area and slightly less at both ends. The ends of the edge sealing on both sides are prone to insufficient pressure, resulting in incomplete melting of the hot melt adhesive in some areas, which can lead to poor edge sealing and leakage risks.

[0007] 4. The cutting edge of the hobbing cutter wears out quickly, requiring frequent cleaning, resulting in high maintenance costs and long maintenance time. Summary of the Invention

[0008] To address the problems of low cutting accuracy, high adjustment difficulty, low edge sealing quality, rapid wear of the roller cutter, and high maintenance costs and time associated with traditional roller-type heat sealing and cutting machines for diaper cutting and edge sealing, this invention provides a diaper production cutting device and diaper production cutting system.

[0009] This invention is achieved, in one respect, through the following technical solution: A diaper production cutting device includes a machine body, on which a turntable is controllably mounted and rotated, and a plurality of cutting mechanisms are mounted in a circular array on one side of the turntable. The cutting mechanism includes a mounting frame that is fixedly installed on one side of the outer ring of the turntable and perpendicular to the radial direction of the turntable. A connecting frame is mounted on the mounting frame that can be controlled to slide and adjust along its length. The connecting frame is equipped with a lead screw along the radial direction of the turntable and a second motor to drive the lead screw to rotate; the lead screw is divided into two sections with opposite thread directions, and sleeves are fitted on the two sections of the lead screw respectively; It also includes an upper pressure plate fixedly installed with a sleeve near the mounting bracket, and a connecting seat fixedly installed with another sleeve. The upper pressure plate and the connecting seat are slidably connected to the connecting bracket via two second guide rails. A lower pressure plate is rotatably connected to the connecting seat, and a telescopic cylinder capable of pushing the lower pressure plate to flip is installed on the connecting seat. A cutter is fixedly installed on the side of the upper pressure plate near the lower pressure plate, and a heat sealing seat is installed on the inside of the cutter; a cutter groove corresponding to the cutter is opened on the side of the lower pressure plate near the upper pressure plate.

[0010] A further improvement of the present invention is that the surface of the lower pressure plate inside the cutter groove is provided with a plurality of adsorption holes capable of adsorbing diapers; and an air pipe connected to the lower pressure plate is provided, which communicates with the adsorption holes and can be connected to a negative pressure device.

[0011] A further improvement of the present invention is that the cutter has an inwardly bent flange on the side near the upper pressure plate, and the flange has bolt holes that can be bolted to the upper pressure plate; and the heat sealing seat is installed by bolting to the flange.

[0012] A further improvement of the present invention includes a mounting bracket comprising a first mounting plate fixedly connected to the side of the turntable and a second mounting plate perpendicularly connected to the mounting bracket; a first slide rail and a rack are mounted on the second mounting plate; a first motor is fixedly connected to the connecting bracket, and a gear meshing with the rack is connected to the output shaft of the first motor; a first slider that slides in cooperation with the first slide rail is fixedly mounted on the housing of the first motor via a motor mounting bracket.

[0013] A further improvement of the present invention is that a plurality of first stiffening plates are connected and installed between the first mounting plate and the second mounting plate.

[0014] A further improvement of the present invention is that the first slide rail is provided with two rails, which are respectively installed on two perpendicular surfaces of the second mounting plate.

[0015] A further improvement of the present invention is that the motor mounting bracket has an L-shaped bent structure, and the two first sliders are respectively fixedly installed on the inner side of the two bent sections of the motor mounting bracket.

[0016] A further improvement of the present invention is that limit plates are installed at both ends of the second mounting plate.

[0017] A further improvement of the present invention is that the connecting frame has an L-shaped bending structure, with several second stiffeners connected to the inner sides of its two bending sections. One bending section is fixedly connected to the first motor, and the other bending section is connected to the second motor and the second guide rail.

[0018] Another aspect of the present invention is achieved through the following technical solution: A diaper production and cutting system includes two spaced conveyor belt mechanisms for conveying diaper material and the diaper production and cutting device, with a turntable disposed between the two conveyor belt mechanisms.

[0019] As can be seen from the above technical solutions, the beneficial effects of the present invention are: During use, it is placed behind the diaper belt in an overhead conveyor state. Initially, the telescopic cylinder is in the retracted state, meaning the lower pressure plate is open and the upper pressure plate is separated from the connecting seat. The machine body drives the turntable to rotate, positioning a cutting mechanism at the bottom of the turntable. This means the mounting frame of the cutting mechanism is horizontal in the left-right direction, with the upper pressure plate above the diaper belt, and the connecting seat and lower pressure plate below. The connecting frame is at the leftmost end of the mounting frame. Based on the diaper belt's conveying speed, the connecting frame moves along the length of the mounting frame at the same speed as the diaper belt, aligning the upper pressure plate with the diaper to be cut. Throughout this process, the telescopic cylinder extends, driving the lower pressure plate... The pressure plate flips upwards to face the upper pressure plate, controlling the second motor to drive the lead screw to rotate, causing the upper and lower pressure plates to move closer together. The cutter and cutter groove work together to cut the diaper, and the heat sealing seat heat seals the cut edges of the diaper. Then, the second motor drives the lead screw to rotate in the opposite direction, causing the upper and lower pressure plates to move away from each other, and the telescopic cylinder retracts, causing the lower pressure plate to flip downwards and open. At this time, the connecting frame moves along the length of the mounting frame to the rightmost end and stops. The drive turntable rotates to bring the next cutting mechanism to the bottom end for cutting and heat sealing the next diaper. When the cutting mechanism carrying the cut and heat-sealed diaper rotates to other positions, it can place the diaper to the next packaging station. This diaper production cutting device adopts the principle of "planar relative static heat sealing cutting" on a continuous diaper production line. Compared with traditional roller-type heat sealing cutting machines, it eliminates the problem of cutting accuracy decreasing with rotational speed caused by the synchronization of the roller's dynamic biting cutting and the production line's traction speed. It can effectively improve cutting accuracy, reduce the difficulty of parameter adjustment, make the sealing pressure distribution more uniform, effectively improve the problem of loose sealing, and improve sealing quality. In addition, the cutting blade of this device works differently from the roller during the cutting process, and will not suffer from rapid blade wear due to problems such as line contact in circumferential motion. Moreover, the entire cutting mechanism can be easily disassembled and repaired without affecting normal cutting and heat sealing operations, effectively reducing maintenance costs and time, and improving work efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the cutting system according to a specific embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram illustrating the use of the cutting device according to a specific embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the cutting device structure according to a specific embodiment of the present invention.

[0024] Figure 4 This is a first-view structural diagram of the cutting mechanism according to a specific embodiment of the present invention.

[0025] Figure 5 This is a second-view structural diagram of the cutting mechanism according to a specific embodiment of the present invention.

[0026] Figure 6 This is a third-view structural diagram of the cutting mechanism according to a specific embodiment of the present invention.

[0027] Figure 7 This is a fourth-view structural diagram of the cutting mechanism according to a specific embodiment of the present invention.

[0028] Figure 8 This is a first-view structural diagram of the lower pressure plate in the open state according to a specific embodiment of the present invention.

[0029] Figure 9 This is a second-view structural diagram of the lower pressure plate in the open state according to a specific embodiment of the present invention.

[0030] In the attached diagram: 100, machine body; 11, turntable; 200, diaper fabric strip; 300, cutting mechanism; 31, mounting bracket; 311, first mounting plate; 312, second mounting plate; 313, limiting plate; 314, first stiffening plate; 315, mounting bolt; 316, first slide rail; 317, rack; 32, first motor; 321, motor mounting bracket; 322, first slider; 323, gear; 33, connecting... 331. Connecting frame, 332. Second guide rail, 333. Bearing seat, 334. Second slider, 34. Second motor, 35. Lead screw, 351. Sleeve, 36. Upper pressure plate, 361. Cutter, 362. Heat sealing seat, 363. Flanging, 37. Lower pressure plate, 371. Cutter groove, 372. Adsorption hole, 373. Connecting seat, 374. Air pipe, 38. Telescopic cylinder, 400. Conveyor belt mechanism. Detailed Implementation

[0031] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0032] like Figure 2-9As shown, the present invention discloses a diaper production cutting device, including a machine body 100. A vertical turntable 11 (with the axis of rotation in the front-to-back horizontal direction and the diaper material belt 200 being conveyed horizontally from left to right) is controllably mounted on the machine body 100. Six cutting mechanisms 300 are installed in a ring array on the outer ring of the turntable 11 on the side (front side) away from the machine body 100. The cutting mechanism 300 includes a mounting frame 31 that is fixedly connected to the outer ring of the turntable 11 on the side (front side) away from the machine body 100 and is perpendicular to the radial direction of the turntable 11. A connecting frame 33 is controllably and slidably mounted on the mounting frame 31 along its length direction. The connecting frame 33 is equipped with a lead screw 35 along the radial direction of the turntable 11 and a second motor 34 that drives the lead screw 35 to rotate; the lead screw 35 is divided into two sections with opposite thread directions, and sleeves 351 are threaded onto the two sections of the lead screw 35 respectively; The cutting device also includes an upper pressure plate 36 fixedly connected to a sleeve 351 near the mounting frame 31, and a connecting seat 373 fixedly connected to a sleeve 351 away from the mounting frame 31. The upper pressure plate 36 and the connecting seat 373 are arranged opposite each other in the radial direction of the turntable 11. The upper pressure plate 36 and the connecting seat 373 are slidably connected to the connecting frame 33 via two second guide rails. The second guide rails include two second slide rails 332 arranged on both sides of the lead screw 35. Second sliders 334 are slidably installed on the second slide rails 332 and fixedly connected to the upper pressure plate 36 and the connecting seat 373 respectively. The leading edge of the connecting seat 373 away from the upper pressure plate 36 is rotatably connected to a lower pressure plate 37 via a hinge, and a telescopic cylinder 38 capable of pushing the lower pressure plate 37 to flip is installed on the connecting seat 373. A cutter 361 for cutting diapers is fixedly installed on the side of the upper pressure plate 36 near the lower pressure plate 37. The cutter 361 is in a closed loop shape adapted to the shape of the diaper. A heat sealing seat 362 for heat sealing the diaper is installed on the inner side of the cutter 361. A cutter groove 371 corresponding to the cutter 361 is opened on the side of the lower pressure plate 37 near the upper pressure plate 36.

[0033] This diaper production cutting device is placed behind the diaper material belt 200 (with absorbent cores laminated on it at intervals) in an overhead conveyor state; initially, the telescopic cylinder 38 is in the retracted state, that is, the lower pressure plate 37 is in the open state (e.g., Figure 8-9As shown), the upper pressure plate 36 and the connecting seat 373 are separated; the machine body 100 drives the turntable 11 to rotate 60 degrees, so that a cutting mechanism 300 is at the lowest end of the turntable 11, that is, the length direction of the mounting frame 31 of the cutting mechanism 300 is horizontal (and is above the diaper material belt 200), the upper pressure plate 36 is above the diaper material belt 200, the connecting seat 373 and the lower pressure plate 37 are below the diaper material belt 200, and the connecting frame 33 is at the leftmost end of the mounting frame 31; according to the conveying speed of the diaper material belt 200, the connecting frame 33 is controlled to move at the same speed as the diaper material belt 200 along the length direction of the mounting frame 31 (a speed measuring device can be used to make the connecting frame 33 and the diaper material belt 200 relatively stationary), and the upper pressure plate 36 is aligned with the diaper to be cut; during the entire process of the connecting frame 33 moving at the same speed, the telescopic cylinder 38 extends, driving the lower pressure plate 37 to flip upward and align with the upper pressure plate 373. 6. In contrast, the second motor 34 drives the lead screw 35 to rotate, causing the upper pressure plate 36 and the lower pressure plate 37 (connecting seat 373) to move closer together. The cutter 361 and the cutter groove 371 work together to cut the diaper. The heat sealing seat 362 heat seals the cut edge of the diaper. Then, the second motor 34 drives the lead screw 35 to rotate in the opposite direction, causing the upper pressure plate 36 and the lower pressure plate 37 (connecting seat 373) to move away from each other. The telescopic cylinder 38 retracts, causing the lower pressure plate 37 to flip down and open (carrying the cut and heat-sealed diaper). At this time, the connecting frame 33 moves along the length of the mounting frame 31 to the rightmost end and stops. The drive turntable 11 rotates 60 degrees, so that the next cutting mechanism 300 is at the bottom (the position to be cut) to cut and heat seal the next diaper. When the cutting mechanism 300 carrying the cut and heat-sealed diaper rotates to other positions, it can place the diaper to the next packaging station. This diaper production cutting device adopts the principle of "planar relative static heat sealing cutting" on a continuous diaper production line. Compared with the traditional roller-type heat sealing cutting machine, it eliminates the problem of cutting accuracy decreasing with rotation speed caused by the synchronization of the roller's dynamic biting cutting and the production line's traction speed. It can effectively improve cutting accuracy, reduce the difficulty of parameter adjustment, make the sealing pressure distribution more uniform, effectively improve the problem of loose sealing, and improve sealing quality. In addition, the cutting blade 361 of this device works differently from the roller blade during the cutting process, and will not suffer from rapid blade wear due to problems such as line contact in circumferential motion. Moreover, the entire cutting mechanism 300 can be easily disassembled and inspected without affecting normal cutting and heat sealing operations (the control turntable 11 rotates to skip the inspection position), effectively reducing maintenance costs and time, and improving work efficiency.

[0034] Furthermore, the opening edge of the cutter groove 371 is chamfered. When the cutter 361 cuts, the chamfer can guide the cutter, making it easier for the cutter to enter the cutter groove 371, resulting in a smoother cutting process. This helps to further improve cutting accuracy, ensuring that the edges of the cut diapers are neat. The chamfer also reduces the resistance when the cutter 361 enters the cutter groove 371, reducing wear and tear from long-term use and extending its service life. Furthermore, the telescopic cylinder 38 is a pneumatic cylinder, and two are symmetrically arranged on the left and right. When the telescopic cylinder 38 is fully extended, the rear side of the lower pressure plate 37 is completely fitted and limited with the front side of the connecting seat 373, ensuring that the lower pressure plate 37 is horizontal (opposite to the upper pressure plate 36). This allows the lower pressure plate 37 to be subjected to uniform force during the flipping process. When fully extended, the rear side of the lower pressure plate 37 is completely fitted and limited with the front side of the connecting seat 373 and is horizontal. This ensures that when the lower pressure plate 37 and the upper pressure plate 36 are opposite each other, the pressure distribution on the entire contact surface is more uniform. Compared with the uneven edge sealing pressure distribution of traditional roller-type heat sealing and cutting machines, this uniform pressure can effectively avoid localized loose adhesion during edge sealing, improve the edge sealing quality of diapers, reduce the risk of leakage, effectively ensure cutting accuracy, avoid cutting deviations, and effectively protect the cutter 361.

[0035] Two bearing seats 333 are fixedly installed on the connecting frame 33 and rotatably mounted on both ends of the lead screw 35. The bearing seats 333 provide stable and reliable support for the lead screw 35. During the rotation of the lead screw 35 driven by the second motor 34, the bearing seats 333 can ensure that the lead screw 35 maintains an accurate axial position, avoids the lead screw 35 from swaying or deviating during rotation, and makes the rotation of the lead screw 35 more stable. This ensures that the sleeve 351 that cooperates with it can move smoothly and accurately along the lead screw 35, and improves the accuracy of the entire cutting mechanism.

[0036] In a further embodiment, such as Figure 6 , 8 As shown in Figure 9, the surface of the lower pressure plate 37 inside the cutting groove 371 is provided with several adsorption holes 372 for adsorbing diapers; and an air pipe 374 connected to the lower pressure plate 37, which communicates with the adsorption holes 372 and can be connected to a negative pressure device. When cutting diapers, the negative pressure device works, and the air pipe 374 causes the adsorption holes 372 to generate suction, which tightly adsorbs the diaper onto the lower pressure plate 37, improving the cutting accuracy and heat sealing effect, and effectively preventing the diaper from falling off when the lower pressure plate 37 is flipped open; when the turntable 11 rotates, the lower pressure plate 37 carrying the diaper moves to the packaging station, the negative pressure device stops working or blows air in the opposite direction, causing the diaper to detach from the lower pressure plate 37 and fall off, and enter the next packaging process, making the diaper production process simpler and smoother.

[0037] Furthermore, the surface of the lower pressure plate 37 inside the cutter groove 371 is covered with a heat-resistant rubber layer (and has adsorption holes 372). This provides reliable support for the diaper in the heat-sealed state, ensures the heat-sealing effect, and isolates heat to prevent heat conduction to the lower pressure plate 37.

[0038] In a further embodiment, such as Figure 8-9 As shown, the cutter 361 has an inwardly bent flange 363 on the side near the upper pressure plate 36. The flange 363 has bolt holes for bolt connection with the upper pressure plate 36. The heat sealing seat 36 is bolted to the flange 363. This simplifies the installation and disassembly of the cutter 361, greatly shortens maintenance time, and improves equipment maintenance efficiency. It also facilitates the installation and positioning of the heat sealing seat 362, accurately fixing it in a suitable position inside the cutter 361 to ensure the accuracy of the heat sealing operation. Furthermore, when fine adjustments to the position or angle of the heat sealing seat 362 are needed, they can be made by loosening the bolts, enhancing the flexibility and adaptability of the equipment during production, helping to optimize the heat sealing effect and improve product quality. In addition, the bolted connection provides reliable connection strength between the cutter 361, the heat sealing seat 362, and the flange 363, ensuring the stability and reliability of the cutting and heat sealing operations.

[0039] In a further embodiment, such as Figure 4-9 As shown, the mounting frame 31 includes a first mounting plate 311 (fitted to the turntable 11 and connected by mounting bolts 315) fixedly connected to the outer ring of the front side of the turntable 11, and a second mounting plate 312 (perpendicular to the radial direction of the turntable 11) perpendicularly connected to the mounting frame 31. A first slide rail 316 and a rack 317 are mounted on the second mounting plate 312. A first motor 32 is fixedly connected to the connecting frame 33, and a gear 323 meshing with the rack 317 is connected to the output shaft of the first motor 32. A first slider 322 that slides with the first slide rail 316 is fixedly mounted on the housing of the first motor 32 through the motor mounting frame 321. This allows the connecting frame 33 to slide precisely along the first slide rail 316 under the control and drive of the first motor 32, so that the connecting frame 33 (upper pressure plate 36, lower pressure plate 37, etc.) at the corresponding cutting position can move synchronously with the diaper material belt 200, realizing "planar relative static heat sealing cutting".

[0040] Furthermore, several first stiffening plates 314 are connected and installed between the first mounting plate 311 and the second mounting plate 312 (forming an L-shaped bent plate structure), and mounting bolts 315 are disposed between adjacent first stiffening plates 314. The first stiffening plates 314 can effectively enhance the overall structural strength of the mounting frame 31, prevent the mounting plate from deforming due to excessive force, ensure that the mounting frame 31 can stably support the connecting frame 33 and other related components, and ensure the stability of the cutting device.

[0041] Furthermore, two first slide rails 316 are provided, and are respectively installed on two perpendicular surfaces of the second mounting plate 312. That is, the two first slide rails 316 are installed on the front side and the front of the lower side of the second mounting plate 312, respectively, and the rack 317 is fixedly installed on the rear of the lower side of the second mounting plate 312. This provides a more stable guide for the connecting frame 33 (motor mounting frame 321). During the sliding process of the motor mounting frame 321 along the two first slide rails 316, the two first slide rails 316 can constrain it from different directions, making its movement in the plane more precise. This effectively avoids unstable situations such as shaking or offset of the connecting frame 33, thereby ensuring the accuracy and stability of the cutting mechanism and improving the cutting precision. The two first slide rails 316 simultaneously support the connecting frame 33 and the components installed on it. Compared with a single slide rail, they can withstand greater weight and force, ensuring a stable connection between the mounting frame 31 and the connecting frame 33, extending the service life of the equipment, and adapting to high-intensity production work.

[0042] Furthermore, the motor mounting bracket 321 has an L-shaped bent structure, with two first sliders 322 fixedly installed on the inner sides of the two bent sections of the motor mounting bracket 321. This makes the installation layout of the motor mounting bracket 321, the first sliders 322, and the mounting bracket 31 more compact and reasonable. Within a limited space, the drive components and guide components are effectively integrated, reducing the overall space occupied by the equipment. This makes the structure of the cutting mechanism simpler and more compact, which is conducive to the miniaturization design and layout of the equipment, and also achieves stable guiding movement.

[0043] Furthermore, limit plates 313 are installed at both ends of the second mounting plate 312. The limit plates 313 can mechanically limit the first slider 322 to prevent it from falling off the first slide rail 316, thus ensuring safe and reliable operation.

[0044] In a further embodiment, the connecting frame 33 has an L-shaped bent structure, with several second stiffening plates 331 connected to the inner sides of its two bent sections. One bent section is fixedly connected to the first motor 32, and the other bent section is connected to the second motor 34 and the second guide rail (second slide rail 332). This allows the first motor 32, the second motor 34, and the second slide rail 332 to be rationally distributed in different directions, effectively utilizing space and making the overall structure of the cutting mechanism more compact. It avoids mutual interference between components, helps to improve the integration of the equipment, and enables it to achieve more functions within a limited space. The second stiffening plates 331 can greatly enhance the structural strength of the connecting frame 33, prevent the connecting frame 33 from deforming due to excessive force, ensure that the connecting frame 33 stably supports the various components, and guarantee the stability and reliability of the cutting device.

[0045] like Figure 1As shown, this invention also discloses a diaper production cutting system, including two spaced conveyor belt mechanisms 400 capable of conveying diaper material strips 200 (conveying them at a uniform speed from left to right) and the aforementioned diaper production cutting device. A turntable 11 is disposed between the two conveyor belt mechanisms 400. The diaper production cutting device, arranged between the two conveyor belt mechanisms 400, enables continuous diaper production cutting. The conveyor belts continuously and stably feed material, and the cutting mechanism 300 on the turntable 11 cuts the diaper material strips 200 at a certain rhythm, effectively ensuring production efficiency and meeting the needs of large-scale production.

[0046] Furthermore, a packaging conveyor belt is included, which can be positioned below the cutting mechanism 300 in the lower right position. When the lower pressure plate 37 carrying diapers (in the open state) moves to the upper side of the packaging conveyor belt, a negative pressure device provides positive pressure to blow the adsorbed diapers onto the packaging conveyor belt, which then transports the diapers to the packaging station. This eliminates the need for manual intervention, reducing labor costs and improving production efficiency. It also avoids potential contamination and product damage caused by manual handling. The entire process is tightly integrated, ensuring continuity between production stages and reducing inefficiencies caused by excessive intermediate steps. This ensures the compactness and orderliness of the entire production system.

[0047] This diaper production cutting device and diaper production cutting system are placed behind the diaper material belt 200 (with absorbent cores laminated on it at intervals) in an overhead conveyor state during use; initially, the telescopic cylinder 38 is in the retracted state, that is, the lower pressure plate 37 is in the open state (e.g., Figure 8-9As shown), the upper pressure plate 36 and the connecting seat 373 are separated; the machine body 100 drives the turntable 11 to rotate 60 degrees, so that a cutting mechanism 300 is at the lowest end of the turntable 11, that is, the length direction of the mounting frame 31 of the cutting mechanism 300 is horizontal (and is above the diaper material belt 200), the upper pressure plate 36 is above the diaper material belt 200, the connecting seat 373 and the lower pressure plate 37 are below the diaper material belt 200, and the connecting frame 33 is at the leftmost end of the mounting frame 31; according to the conveying speed of the diaper material belt 200, the connecting frame 33 is controlled to move at the same speed as the diaper material belt 200 along the length direction of the mounting frame 31 (a speed measuring device can be used to make the connecting frame 33 and the diaper material belt 200 relatively stationary), and the upper pressure plate 36 is aligned with the diaper to be cut; during the entire process of the connecting frame 33 moving at the same speed, the telescopic cylinder 38 extends, driving the lower pressure plate 37 to flip upward and align with the upper pressure plate 373. 6. In contrast, the second motor 34 drives the lead screw 35 to rotate, causing the upper pressure plate 36 and the lower pressure plate 37 (connecting seat 373) to move closer together. The cutter 361 and the cutter groove 371 work together to cut the diaper. The heat sealing seat 362 heat seals the cut edge of the diaper. Then, the second motor 34 drives the lead screw 35 to rotate in the opposite direction, causing the upper pressure plate 36 and the lower pressure plate 37 (connecting seat 373) to move away from each other. The telescopic cylinder 38 retracts, causing the lower pressure plate 37 to flip down and open (carrying the cut and heat-sealed diaper). At this time, the connecting frame 33 moves along the length of the mounting frame 31 to the rightmost end and stops. The drive turntable 11 rotates 60 degrees, so that the next cutting mechanism 300 is at the bottom (the position to be cut) to cut and heat seal the next diaper. When the cutting mechanism 300 carrying the cut and heat-sealed diaper rotates to other positions, it can place the diaper to the next packaging station. This diaper production cutting device adopts the principle of "planar relative static heat sealing cutting" on a continuous diaper production line. Compared with the traditional roller-type heat sealing cutting machine, it eliminates the problem of cutting accuracy decreasing with rotation speed caused by the synchronization of the roller's dynamic biting cutting and the production line's traction speed. It can effectively improve cutting accuracy, reduce the difficulty of parameter adjustment, make the sealing pressure distribution more uniform, effectively improve the problem of loose sealing, and improve sealing quality. In addition, the cutting blade 361 of this device works differently from the roller blade during the cutting process, and will not suffer from rapid blade wear due to problems such as line contact in circumferential motion. Moreover, the entire cutting mechanism 300 can be easily disassembled and inspected without affecting normal cutting and heat sealing operations (the control turntable 11 rotates to skip the inspection position), effectively reducing maintenance costs and time, and improving work efficiency.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A diaper production cutting device, comprising a machine body (100), a rotary table (11) is controllably rotatably arranged on the machine body (100), characterized in that, The rotary disc (11) is provided with a plurality of cutting mechanisms (300) arranged in an annular array on one side of the outer ring thereof; The cutting mechanism (300) comprises a mounting frame (31) fixedly mounted on one side of the outer ring of the rotary disc (11) and perpendicular to the radial direction of the rotary disc (11), and a connecting frame (33) slidably mounted on the mounting frame (31) along the length direction thereof; The connecting frame (33) is provided with a lead screw (35) in the radial direction of the rotary disc (11) and a second motor (34) for driving the rotation of the lead screw (35); the lead screw (35) is divided into two sections with opposite screw directions, and the two sections of the lead screw (35) are respectively provided with a sleeve (351); The cutting mechanism (300) further comprises an upper pressing plate (36) fixedly mounted on the sleeve (351) close to the mounting frame (31), a connecting seat (373) fixedly mounted on the other sleeve (351), and the upper pressing plate (36) and the connecting seat (373) are respectively slidably connected and mounted on the connecting frame (33) through two second guide rails; the connecting seat (373) is rotatably connected with a lower pressing plate (37), and the connecting seat (373) is provided with an extension cylinder (38) capable of pushing the lower pressing plate (37) to flip; The cutting mechanism (300) further comprises a cutter (361) fixedly mounted on one side of the upper pressing plate (36) close to the lower pressing plate (37), and a heat sealing seat (362) mounted on the inner side of the cutter (361); the lower pressing plate (37) is provided with a cutter groove (371) corresponding to the cutter (361) on one side close to the upper pressing plate (36).

2. The diaper production cutting apparatus according to claim 1, wherein The surface of the lower pressing plate (37) on the inner side of the cutter groove (371) is provided with a plurality of adsorption holes (372) capable of adsorbing diapers; and the lower pressing plate (37) is connected with a gas pipe (374) in communication with the adsorption holes (372) and capable of being connected with a negative pressure device.

3. The diaper production cutting apparatus according to claim 1, wherein The cutter (361) is provided with an inwardly bent flange (363) on one side close to the upper pressing plate (36), and the flange (363) is provided with a bolt hole capable of being bolted with the upper pressing plate (36); and the heat sealing seat (36) is bolted with the flange (363).

4. The diaper production cutting apparatus according to claim 1, wherein The mounting frame (31) comprises a first mounting plate (311) fixedly connected with the side surface of the rotary disc (11) and a second mounting plate (312) perpendicularly connected with the mounting frame (31); the second mounting plate (312) is provided with a first sliding rail (316) and a rack (317); the connecting frame (33) is fixedly connected with a first motor (32), and the output shaft of the first motor (32) is connected with a gear (323) engaged with the rack (317); the housing of the first motor (32) is fixedly provided with a first sliding block (322) slidably matched with the first sliding rail (316) through a motor mounting frame (321).

5. The diaper production cutting apparatus according to claim 4, wherein A plurality of first rib plates (314) are connected and mounted between the first mounting plate (311) and the second mounting plate (312).

6. The diaper production cutting apparatus according to claim 4, wherein The first sliding rail (316) is provided with two sliding rails, which are respectively mounted on the two perpendicular surfaces of the second mounting plate (312).

7. The diaper production cutting apparatus according to claim 5, wherein The motor mounting frame (321) is in an L-shaped bent structure, and the two first sliding blocks (322) are respectively fixedly mounted on the inner sides of the two bent sections of the motor mounting frame (321).

8. The diaper production slitting apparatus of claim 4 wherein, The two ends of the second mounting plate (312) are provided with limit plates (313).

9. The diaper production slitting apparatus of claim 4 wherein, The connecting frame (33) is in L-shaped bending structure, and a plurality of second rib plates (331) are connected to the inner side of the two bending sections; one bending section is fixedly connected with the first motor (32), and the other bending section is connected with the second motor (34) and the second guide rail.

10. A diaper production slitting system characterized by, The diaper production cutting device comprises two spaced-apart conveying belt mechanisms (400) capable of conveying diaper material belts (200) and the diaper production cutting device according to any one of claims 1-9, and a rotating disc (11) is arranged between the two conveying belt mechanisms (400).

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