A paper towel multi-layer synchronous centering composite lamination device

Abstract

This invention relates to the field of tissue paper production equipment technology, specifically to a multi-layer synchronous centering and laminating device for tissue paper. It includes an unwinding section, a base platform, and, sequentially fixed along the base platform from back to front, a drive section, a correction section, a slitting section, a group centering section, and a rolling laminating section. The unwinding section includes a base, a power cabinet, a vertical plate, a main shaft, a support shaft, a power component, and an adjustment assembly. The support shaft contains an internal support mechanism. The drive section includes a pair of drive rollers; the correction section includes a laterally movable gantry and correction rollers; the slitting section includes a slitting roller with an annular blade and an annular groove; the group centering section includes a support roller, multiple correction rollers, and a centering mechanism; and the rolling laminating section includes two laminating rollers. By integrating unwinding, correction, slitting, group centering, and rolling laminating into one unit, synchronous centering and laminating of multiple layers of tissue paper can be completed with only one unwinding section. This design is compact, space-saving, and safe and efficient in operation.

Description

Technical Field

[0001] This invention relates to the field of tissue paper production equipment technology, specifically a multi-layer synchronous centering and laminating device for tissue paper. Background Technology

[0002] In the production of multi-layer paper towels, multiple layers of paper need to be stacked and then bonded together using methods such as embossing. Currently, there are two common production methods: One method involves pre-cutting large rolls of industrial-grade paper into smaller rolls of the target width, then mounting these smaller rolls onto multiple unwinding racks for unwinding. Each layer of paper is then drawn out separately, stacked, and embossed. While this method ensures the paper width is fixed, it still requires the same number of unwinding racks as the number of product layers. This results in a large horizontal space requirement for the equipment and a cumbersome production process, hindering efficient production. Another approach is to directly use multiple wide-width industrial paper rolls, each corresponding to one layer of paper. Multiple wide-width rolls are unwound simultaneously, each passing through its own slitting mechanism to longitudinally cut into multiple narrow paper strips. Then, the corresponding narrow paper strips from different layers are stacked and embossed. While this method eliminates the need for pre-slitting and rewinding, the production line must have multiple wide-width unwinding racks, and each rack requires a separate slitting mechanism. This results in bulky and complex equipment, especially for three- or four-layer products, requiring multiple unwinding units arranged side-by-side, occupying significant production space and hindering small-scale, flexible production needs. In addition, when feeding the master rolls, it is often necessary to manually cooperate with the crane to accurately mount each master roll onto the unwinding shaft of the unwinding equipment, which is troublesome and poses a safety hazard. Therefore, there is an urgent need for a device that can directly cut multiple paper strips of the required number of layers from a large-width master roll and complete high-precision synchronous centering and lamination on the same compact production line, in order to simplify the structure, reduce the footprint, adapt to small-scale production, reduce personnel auxiliary work, and improve operational safety. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-layer synchronous centering and laminating device for paper towels, which solves the problems of existing multi-layer paper towel laminating equipment requiring multiple unwinding racks, resulting in complex structures, large space occupation, and difficulty in safe and efficient material feeding. To achieve the above objectives, the present invention provides the following technical solution: a multi-layer synchronous centering and laminating device for paper towels, comprising an unwinding section, a base platform located on the left front of the unwinding section and extending longitudinally, and a driving section, a correction section, a slitting section, a grouping centering section, and a rolling laminating section sequentially fixed to the top surface of the base platform from back to front. The unwinding section includes a base, a power cabinet fixed to the right side of the top surface of the base, a vertical plate fixed to the left side of the top surface of the base, a main shaft fixedly connected to the power output shaft on the inner side of the top of the power cabinet, a support shaft movably sleeved on the top of the vertical plate and slidably sleeved with the main shaft, a power component for driving the support shaft to move laterally, and an adjustment component located above the middle of the base for supporting the vertical and lateral movement of the master roll. The support shaft includes an inner support mechanism that extends outward after being sleeved with the main shaft. The drive unit includes a pair of drive rollers that rotate synchronously in opposite directions to feed the paper tape forward. The correction unit includes a gantry that can move laterally and a pair of correction rollers that are rotatably mounted in the gantry and rotate synchronously in opposite directions to feed the paper tape forward. The slitting section includes a pair of slitting rollers that rotate synchronously in opposite directions to convey the paper tape forward. One of the slitting rollers has a plurality of annular blades evenly fixed along the transverse direction, and the outer peripheral wall of the other slitting roller is provided with annular grooves that correspond one-to-one with the annular blades. The group centering section includes a second support roller extending laterally, a plurality of adjusting rollers arranged in parallel to the front side of the second support roller and arranged vertically, a fifth motor for driving the adjusting rollers to rotate, and a centering mechanism located in front of each adjusting roller. Each group of paper strips after slitting passes through the adjusting rollers and the centering mechanism in sequence to complete the centering. The rolling lamination section includes two synchronously rotating, counter-rotating lamination rollers for rolling lamination and forward conveying of each set of aligned paper tapes. Furthermore, the adjusting roller includes a central shaft fixedly connected to the power output shaft of the motor, two straight roller sections fixedly sleeved on both sides of the middle of the central shaft, and a variable diameter roller fixedly sleeved on the central shaft and respectively connected to both ends of the straight roller sections. The outer diameter of the variable diameter roller gradually decreases towards the direction of the straight roller section. Furthermore, the centering mechanism includes a horizontally arranged base four, a sliding plate that is laterally slidably engaged with the top surface of the base four, a telescopic cylinder four that is laterally fixed inside the base four and whose piston rod end is fixedly connected to the bottom surface of the sliding plate, a gantry four whose bottom ends are respectively fixed to the two sides of the top surface of the sliding plate, a pair of parallel centering rollers whose ends are respectively rotatably sleeved on the two side walls of the gantry four, a gear four that is fixedly sleeved on one end of the two centering rollers and meshes with each other, a side frame four that is fixed to the outer side wall of the gantry four and located outside the gear four, a motor six that is fixed to the outer side wall of the side frame four and used to drive one of the centering rollers to rotate, and a position sensor three installed in the middle of the front part of the gantry four. Furthermore, the group also includes a base plate fixed to the top surface of the base platform, two upright plates fixed to the two sides of the top surface of the base plate, and three upright plates fixed to the middle of the front of the top surface of the base plate. The two ends of the support roller are respectively rotatably sleeved on the rear end of the top of the upright plate. The two ends of the central shaft are respectively rotatably sleeved on the upright plate at the position corresponding to the front side of the support roller. The motor is fixed to the outer side wall of the upright plate. The two ends of the base are respectively fixed to the side wall opposite to the upright plate and the upright plate. Furthermore, the unwinding section also includes a push-pull frame, a limit plate is sleeved on the left end of the main shaft, a prism cavity is provided at the axis of the main shaft, a bushing is rotatably sleeved on the top of the first vertical plate, the support shaft also includes a prism shaft and a top rod that are slidably sleeved and matched with the bushing and the prism cavity, the left end of the prism shaft is provided with a shaft head, the push-pull frame includes a bushing two that is rotatably sleeved on the shaft head, a vertical beam whose top end is fixed to the bottom of the bushing two, and a linear bearing sleeved on the side wall of the vertical beam, a guide rod that is slidably sleeved and matched with the linear bearing is fixed on the outer side wall of the first vertical plate, and a piston rod that extends laterally and passes through the first vertical plate and then... The telescopic cylinder is fixedly connected to the bottom of the vertical beam. The right side of the middle part of the prism shaft is provided with a cylindrical cavity that is slidably sleeved with the top rod. The outer peripheral wall of the prism shaft is provided with a strip groove extending along its axial direction at the position corresponding to the left end of the cylindrical cavity. The inner support mechanism includes a pair of discs slidably sleeved on the left end of the cylindrical cavity, springs with both ends respectively connected to the inner side wall of the discs, a grooved strip provided on the periphery of the springs and slidably engaged in the corresponding strip groove, and a connecting rod hinged to both ends of the grooved strip. The outer peripheral wall of the disc is provided with a slot that is hinged to the outer end of the connecting rod. The center of the disc is provided with a screw hole. The left end of the top rod is provided with a screw that is threadedly sleeved and matched with the screw hole. Furthermore, the adjustment assembly includes a second base, a slide block that slides laterally onto the top surface of the second base, ear plates fixed at the four corners of the top surface of the slide block, a pair of support rollers extending laterally and rotatably sleeved at both ends onto the corresponding ear plates, and a telescopic cylinder two installed laterally inside the second base with the piston rod end fixedly connected to the bottom of the slide block. The bottom of the inner sidewall of the power cabinet and the upright plate is vertically installed with the piston rod top end fixedly connected to the four corners of the second base, respectively. A position sensor one is installed on the left side of the front top of the power cabinet. Furthermore, the drive unit also includes a base cabinet fixed to the top surface of the base platform and a door frame fixed to the top surface of the base cabinet on both sides. The two ends of the drive roller are respectively rotatably sleeved on one side wall of the door frame. One end of each of the two drive rollers is respectively fixedly sleeved with a gear that meshes with each other. A side frame is fixed on the outer side wall of the door frame corresponding to the gear. A motor for driving one of the drive rollers is installed on the outer side of the side frame. Furthermore, the correction unit also includes a base cabinet two fixed to the top surface of the base platform, a base three fixed laterally to the top surface of the base cabinet two, a motor three fixed to the outer wall of one end of the base three, a drive screw with both ends rotatably sleeved on the middle of the two side walls of the base three and one end fixedly connected to the power output shaft of the motor three, and a screw nut threadedly sleeved on the drive screw. The bottom of the gantry two is slidably engaged with the top of the base three. The screw nut is fixedly connected to the bottom of the gantry two. One end of each of the two correction rollers is fixedly sleeved with a meshing gear two. A side frame two is fixed on the outer side wall of the gantry two corresponding to the gear two. A motor two for driving one of the correction rollers is installed on the outer side of the side frame two. Position sensors two are installed on both sides of the middle of the rear end of the top surface of the base cabinet two. Furthermore, the slitting section also includes a base cabinet three fixed to the top surface of the base platform and door frames three fixed to the top surface of the base cabinet three on both sides. The two ends of the slitting roller are respectively rotatably sleeved on the side walls of the door frames three. One end of each of the two slitting rollers is respectively fixedly sleeved with a meshing gear three. A side frame three is fixed on the outer side wall of the door frame three corresponding to the gear three. A motor four for driving one of the slitting rollers to rotate is installed on the outer side of the side frame three. Furthermore, the rolling composite part also includes a base cabinet four fixed to the front end of the top surface of the base platform, and a pair of side cavities and side plates fixed parallel to each other on both sides of the top surface of the base cabinet four. The two ends of the inner shaft of the composite pressure roller are respectively rotatably sleeved on the side cavity and the side plate. One end of the inner shaft of the two composite pressure rollers extending into the inner cavity of the side cavity is fixedly fitted with a gear five that meshes with each other. The inner cavity of the side cavity is rotatably installed with two gears six that mesh with each other and are respectively meshed with the corresponding gear five. A motor seven is installed on the outer wall of the side cavity to drive one of the gears five and six to rotate. Compared with the prior art, the beneficial effects of the present invention are: The present invention relates to a multi-layer synchronous centering and laminating device for paper towels. By setting up an unwinding section, a driving section, a correction section, a slitting section, a group centering section, and a rolling laminating section, the unwinding, correction, slitting, group centering, and rolling laminating are integrated into the same production line. Only one unwinding section is needed to complete the unwinding of a large-width master roll. After slitting, multiple narrow-width paper strips are formed. After group centering, multi-layer synchronous lamination is completed. There is no need to set up multiple unwinding frames, which greatly simplifies the equipment structure, reduces the equipment floor space, and is conducive to small-scale and flexible production needs. The present invention relates to a multi-layer synchronous centering composite laminating device for paper towels. The unwinding section is equipped with an internal support mechanism, a push-pull frame, a telescopic cylinder, and an adjustment component, which can realize automatic feeding and centering support of the mother roll. This eliminates the need for manual operation with a crane, which is cumbersome and improves feeding efficiency and operational safety. The present invention relates to a multi-layer synchronous centering and laminating device for paper towels. The group centering section is equipped with an adjustment roller and a centering mechanism. The adjustment roller adopts a structure with a straight roller section in the middle and variable diameter rollers at both ends, which can perform preliminary adjustment of the paper strip after slitting. Then, in conjunction with the position sensor of the centering mechanism, precise centering is performed to ensure that each layer of paper strip is in an accurate centering position before entering the rolling laminating section, which effectively improves the lamination accuracy and product quality. Attached Figure Description Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a three-dimensional structural diagram of the unwinding section of the present invention; Figure 3 This is an exploded structural diagram of the support shaft of the present invention; Figure 4 This is a three-dimensional structural schematic diagram of the prism shaft of the present invention; Figure 5 This is a three-dimensional structural diagram of the internal support mechanism of the present invention; Figure 6 This is a three-dimensional structural diagram of the push-pull bracket of the present invention; Figure 7 This is a three-dimensional structural schematic diagram of the adjustment component of the present invention; Figure 8 This is a three-dimensional structural diagram of the driving part of the present invention; Figure 9 This is a three-dimensional structural diagram of the correction section of the present invention; Figure 10 This is a three-dimensional structural diagram of the slitting part of the present invention; Figure 11 This is a three-dimensional structural diagram of the middle section of the grouping assembly in this invention; Figure 12 This is a three-dimensional structural diagram of the adjusting roller of the present invention; Figure 13 This is a three-dimensional structural diagram of the centering mechanism of the present invention; Figure 14 This is a three-dimensional structural diagram of the rolling composite part of the present invention. In the diagram: 1 - base platform; 2-Unwinding section; 2.1-Base 1; 2.2-Power cabinet; 2.3-Main shaft; 2.3.1-Prismatic cavity; 2.4-Limiting plate; 2.5-Upright plate 1; 2.6-Shaft sleeve 1; 2.7-Support shaft; 2.7.1-Prismatic shaft; 2.7.1.1-Cylindrical cavity; 2.7.1.2-Strip groove; 2.7.1.3-Shaft head; 2.7.2-Internal support mechanism; 2.7.2.1-Disc; 2.7.2.1.1-Slot opening; 2.7.2.1.2-Screw hole; 2.7.2.2-Slotted strip; 2.7. 2.3 Connecting rod; 2.7.2.4 Spring; 2.7.3 Top rod; 2.7.3.1 Screw; 2.8 Push-pull bracket; 2.8.1 Bushing two; 2.8.2 Vertical beam; 2.8.3 Linear bearing; 2.9 Telescopic cylinder one; 2.10 Adjustment assembly; 2.10.1 Base two; 2.10.2 Slide; 2.10.3 Ear plate; 2.10.4 Support roller one; 2.10.5 Telescopic cylinder two; 2.11 Telescopic cylinder three; 2.12 Guide rod; 2.13 Position sensor one; 3-Drive unit; 3.1-Base cabinet 1; 3.2-Door frame 1; 3.3-Drive roller; 3.4-Gear 1; 3.5-Side frame 1; 3.6-Motor 1; 4-Correction correction unit; 4.1-Base cabinet two; 4.2-Base three; 4.3-Hall frame two; 4.4-Correction correction roller; 4.5-Gear two; 4.6-Side frame two; 4.7-Motor two; 4.8-Motor three; 4.9-Drive screw; 4.10-Screw nut; 4.11-Position sensor two; 5-Slitting section; 5.1-Base cabinet three; 5.2-Hall three; 5.3-Slitting roller; 5.3.1-Annular blade; 5.3.2-Annular blade groove; 5.4-Gear three; 5.5-Side frame three; 5.6-Motor four; 6-Grouping and centering; 6.1-Base plate; 6.2-Upright plate two; 6.3-Upright plate three; 6.4-Support roller two; 6.5-Adjusting roller; 6.5.1-Central shaft; 6.5.2-Straight roller section; 6.5.3-Variable diameter roller; 6.6-Motor five; 6.7-Centering mechanism; 6.7.1-Base four; 6.7.2-Slide plate; 6.7.3-Telescopic cylinder four; 6.7.4-Gantry four; 6.7.5-Centering roller; 6.7.6-Gear four; 6.7.7-Side frame four; 6.7.8-Motor six; 6.7.9-Position sensor three; 7-Rolling composite section; 7.1-Base cabinet four; 7.2-Side cavity; 7.3-Side plate; 7.4-Composite pressure roller; 7.5-Gear five; 7.6-Gear six; 7.7-Motor seven. Detailed Implementation The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Please see Figure 1-14 The present invention provides a technical solution, a multi-layer synchronous centering and laminating device for paper towels, including an unwinding section 2, a base platform 1 located on the left front of the unwinding section 2 and extending longitudinally, and a driving section 3, a correction section 4, a slitting section 5, a group centering section 6 and a rolling laminating section 7 that are sequentially fixed to the top surface of the base platform 1 from back to front. The unwinding section 2 is used to install and release the wide-width tissue roll, conveying the paper tape on the roll forward. The base platform 1 extends longitudinally (i.e., from back to front), providing a mounting base for subsequent functional sections. Along the back-to-front direction, the top surface of the base platform 1 is sequentially fixed with a drive section 3, a correction section 4, a slitting section 5, a grouping and centering section 6, and a rolling and bonding section 7. Among them, there are two drive sections 3, located after the correction section 4 and before the slitting section 5, respectively, used to provide driving force for the paper tape transport. The unwinding section 2 includes a base 2.1, a power cabinet 2.2 fixed to the right side of the top surface of the base 2.1, a vertical plate 2.5 fixed to the left side of the top surface of the base 2.1, a main shaft 2.3 fixedly connected to the power output shaft on the inner side of the top of the power cabinet 2.2, a support shaft 2.7 movably sleeved on the top of the vertical plate 2.5 and slidably sleeved with the main shaft 2.3, a power component for driving the support shaft 2.7 to move laterally, and an adjustment assembly 2.10 located above the middle of the base 2.1 for supporting the vertical and lateral movement of the master roll. The power cabinet 2.2 contains a drive motor and related transmission mechanisms for driving the main shaft 2.3 to rotate. The right end of the main shaft 2.3 is fixedly connected to the power output shaft on the inner side of the top of the power cabinet 2.2, and the left end of the main shaft 2.3 extends laterally to the left. The vertical plate 2.5 is vertically fixed to the left side of the top surface of the base 2.1, and a bushing 2.6 is rotatably sleeved on its top. The support shaft 2.7 is arranged laterally, with its right end slidingly fitted with the main shaft 2.3, and its left end passing through the bushing 2.6 and extending outward. The inner cavity of the support shaft 2.7 is provided with an inner support mechanism 2.7.2. After the inner support mechanism 2.7.2 is fitted with the main shaft 2.3, it can extend outward, thereby tightening and fixing the mother roll fitted outside the support shaft 2.7 from the inside. The support shaft 2.7 includes a prism shaft 2.7.1 and a top rod 2.7.3. A prism cavity 2.3.1 is located at the axial center of the main shaft 2.3, and the prism shaft 2.7.1 is slidably fitted with the bushing 2.6 and the prism cavity 2.3.1. A shaft head 2.7.1.3 is located at the left end of the prism shaft 2.7.1. The unwinding section 2 also includes a push-pull frame 2.8, which includes a bushing 2.8.1 rotatably fitted to the shaft head 2.7.1.3, a vertical beam 2.8.2 with its top end fixed to the bottom of the bushing 2.8.1, and a linear bearing 2.8.3 fitted to the side wall of the vertical beam 2.8.3. A guide rod 2.12, which is slidably fitted with the linear bearing 2.8.3, is fixed to the outer wall of the upright plate 2.5. A telescopic cylinder 2.9 is installed at the center of the top surface of the base 2.1, extending laterally and with its piston rod passing through the vertical plate 2.5 and fixedly connected to the bottom end of the vertical beam 2.8.2. The telescopic cylinder 2.9 serves as the power component for driving the lateral movement of the support shaft 2.7. When its piston rod extends or retracts, it drives the vertical beam 2.8.2 to move laterally along the guide rod 2.12, which in turn drives the prism shaft 2.7.1 to slide laterally through the bushing 2.8.1, thereby realizing the engagement and disengagement of the support shaft 2.7 and the main shaft 2.3. The right side of the middle part of the prism shaft 2.7.1 has a cylindrical cavity 2.7.1.1 that is slidably sleeved with the top rod 2.7.3. The outer peripheral wall of the prism shaft 2.7.1 has a strip groove 2.7.1.2 extending axially at the position corresponding to the left end of the cylindrical cavity 2.7.1.1. The inner support mechanism 2.7.2 includes a pair of disks 2.7.2.1 slidably sleeved with the left end of the cylindrical cavity 2.7.1.1, springs 2.7.2.4 with both ends connected to the inner sidewalls of the disks 2.7.2.1, a grooved strip 2.7.2.2 located around the springs 2.7.2.4 and slidably engaged with the corresponding strip groove 2.7.1.2, and a connecting rod 2.7.2.3 hinged to both ends of the grooved strip 2.7.2.2. The outer peripheral wall of the disc 2.7.2.1 is provided with a slot 2.7.2.1.1 for hinged connection with the outer end of the connecting rod 2.7.2.3, and the center of the disc 2.7.2.1 is provided with a screw hole 2.7.2.1.2. The left end of the push rod 2.7.3 is provided with a screw 2.7.3.1 that is threadedly fitted into the screw hole 2.7.2.1.2. The push rod 2.7.3 is inserted into the cylindrical cavity 2.7.1.1, so that the screw 2.7.3.1 is threadedly connected to the screw hole 2.7.2.1.2 of the right disc 2.7.2.1. The support shaft 2.7 is driven to move to the right by the telescopic cylinder 2.9. During the process of the prism shaft 2.7.1 being sleeved with the prism cavity 2.3.1, the inner end face of the prism cavity 2.3.1 gradually presses against the right end of the push rod 2.7.3, thereby pushing the right disc 2.7.2.1 to the left. The spring 2.7.2.4 is compressed, and the connecting rod 2.7.2.3 pushes the grooved strip 2.7.2.2 radially outward. The grooved strip 2.7.2.2 extends radially outward along the strip groove 2.7.1.2, thereby tightening the inner circumferential wall of the mother roll shaft. The adjustment assembly 2.10 includes a base 2.10.1, a slide 2.10.2 that is laterally slidably engaged with the top surface of the base 2.10.1, ear plates 2.10.3 fixed at the four corners of the top surface of the slide 2.10.2, a pair of support rollers 2.10.4 extending laterally and rotatably sleeved at their respective ends on the ear plates 2.10.3, and a telescopic cylinder 2.10.5 laterally installed inside the base 2.10.1 with the piston rod end fixedly connected to the bottom of the slide 2.10.2. Telescopic cylinders 2.11 are vertically installed on the bottom inner walls of the power cabinet 2.2 and the vertical plate 2.5 at positions corresponding to the four corners of the base 2.10.1, with the piston rod tops fixedly connected to the four corners of the base 2.10.1. Support roller 2.10.4 supports the bottom of the mother roll. Telescopic cylinder 2.10.5 can push slide 2.10.2 to move laterally, thereby adjusting the lateral position of the mother roll. Telescopic cylinder 2.11 can push base 2.10.1 to move vertically, thereby adjusting the vertical position of the mother roll and aligning the center of the mother roll shaft with the center of support shaft 2.7 for easy loading. Position sensor 2.13 is installed on the top front left of the power cabinet 2.2 to detect the position of the mother roll. The drive unit 3 includes a base cabinet 3.1 fixed to the top surface of the base platform 1, two masts 3.2 fixed to the top surfaces of the base cabinet 3.1 on both sides, and a pair of drive rollers 3.3 that rotate synchronously in opposite directions to convey the paper tape forward. The two ends of the drive rollers 3.3 are rotatably sleeved on the side walls of the masts 3.2. One end of each drive roller 3.3 is fixedly sleeved with a meshing gear 3.4. A side frame 3.5 is fixed to the outer side wall of the masts 3.2 corresponding to the gear 3.4. A motor 3.6 for driving one drive roller 3.3 is mounted on the outer side of the side frame 3.5. When the motor 3.6 rotates, it drives the two drive rollers 3.3 to rotate synchronously in opposite directions through the transmission of the gear 3.4, clamping and conveying the paper tape forward. The correction unit 4 includes a base cabinet 4.1 fixed to the top surface of the base platform 1, a base 4.2 fixed laterally to the top surface of the base cabinet 4.1, a laterally movable gantry 4.3, a pair of correction rollers 4.4 rotatably mounted inside the gantry 4.3 and rotating synchronously in opposite directions to feed the paper tape forward, a motor 4.8 fixed to the outer wall of one end of the base 4.2, a drive screw 4.9 rotatably sleeved at both ends on the middle of the two side walls of the base 4.2 and fixedly connected at one end to the power output shaft of the motor 4.8, and a screw nut 4.10 threaded onto the drive screw 4.9. The bottom of the gantry 4.3 is slidably engaged with the top of the base 4.2, and the screw nut 4.10 is fixedly connected to the bottom of the gantry 4.3. Two alignment rollers 4.4 are respectively fitted with meshing gears 4.5 at one end. A side frame 4.6 is fixed to the outer wall of the gantry 4.3 corresponding to the gears 4.5. A motor 4.7 for driving one alignment roller 4.4 is mounted on the outer side of the side frame 4.6. Position sensors 4.11 are installed on both sides of the middle rear end of the top surface of the base cabinet 4.1 to detect the lateral position of the paper tape. When motor 3 4.8 rotates, it drives gantry 2 4.3 and the correction roller 4.4 to move laterally through the cooperation of the drive screw 4.9 and screw nut 4.10, thereby correcting the paper tape passing through laterally and ensuring that the paper tape is always on the correct transmission path. The slitting section 5 includes a base cabinet 5.1 fixed to the top surface of the base platform 1, two side frames 5.2 fixed to the top surface of the base cabinet 5.1, and a pair of slitting rollers 5.3 that rotate synchronously in opposite directions to feed the paper tape forward. The two ends of each slitting roller 5.3 are rotatably sleeved on the side walls of the frame 5.2. One end of each slitting roller 5.3 is fixedly sleeved with a meshing gear 5.4. A side frame 5.5 is fixed to the outer side wall of the frame 5.2 corresponding to the gear 5.4. A motor 5.6 for driving one slitting roller 5.3 is mounted on the outer side of the side frame 5.5. Multiple annular blades 5.3.1 are evenly fixed along the transverse direction on one slitting roller 5.3, and the outer peripheral wall of the other slitting roller 5.3 has annular grooves 5.3.2 corresponding to the annular blades 5.3.1. As the paper strip passes between the two slitting rollers 5.3, the annular blade 5.3.1 engages with the annular cutter groove 5.3.2 to longitudinally slit the wide paper strip into multiple narrow paper strips. The grouping center section 6 includes a base plate 6.1 fixed to the top surface of the base platform 1, two vertical plates 6.2 with their bottom ends fixed to both sides of the top surface of the base plate 6.1, three vertical plates 6.3 with their bottom ends fixed to the middle of the front of the top surface of the base plate 6.1, a horizontally extending support roller 6.4, multiple adjusting rollers 6.5 arranged vertically and parallel to the front side of the support roller 6.4, a motor 6.6 for driving the adjusting rollers 6.5 to rotate, and a centering mechanism 6.7 located in front of each adjusting roller 6.5. The two ends of the support roller 6.4 are rotatably sleeved on the rear end of the top of the vertical plate 6.2. The two ends of the central shaft 6.5.1 are rotatably sleeved on the vertical plate 6.2 at positions corresponding to the front side of the support roller 6.4. The motor 6.6 is fixed to the outer wall of the vertical plate 6.2. In this embodiment, there are three adjusting rollers 6.5, arranged parallel to each other at the top, middle, and bottom positions. The alignment roller 6.5 includes a central shaft 6.5.1 fixedly connected at one end to the power output shaft of motor 6.6, two straight roller sections 6.5.2 fixedly sleeved on both sides of the middle of the central shaft 6.5.1, and variable diameter rollers 6.5.3 fixedly sleeved on the central shaft 6.5.1 and respectively connected to both ends of the straight roller sections 6.5.2. The outer diameter of the variable diameter roller 6.5.3 gradually decreases towards the straight roller section 6.5.2. After slitting, each group of paper strips hangs down naturally after passing over the support roller 6.4, and is then supported on the corresponding alignment roller 6.5. Due to the special conical structure of the variable diameter roller 6.5.3, the paper strip will be subjected to a component force in the direction of the straight roller section 6.5.2 during the transmission process, thereby achieving initial alignment and centering. The centering mechanism 6.7 includes a horizontally positioned base 6.7.1, a sliding plate 6.7.2 that is slidably engaged with the top surface of the base 6.7.1 via a guide rail, a telescopic cylinder 6.7.3 fixed inside the base 6.7.1 (with the piston rod end fixedly connected to the bottom of the sliding plate 6.7.2), and two gantry frames 6.7.4 whose bottom ends are respectively fixed to the top surfaces of the sliding plate 6.7.2, arranged in pairs in parallel and rotatably sleeved at both ends onto the gantry frames 6.7. 4. Centering rollers 6.7.5 on both side walls; gear 6.7.6 fixedly sleeved at one end of the two centering rollers 6.7.5 and meshing with each other; side frame 6.7.7 fixed to the outer side wall of the gantry 6.7.4 and located outside the gear 6.7.6; motor 6.7.8 fixed to the outer side wall of the side frame 6.7.7 and used to drive one of the centering rollers 6.7.5 to rotate; and position sensor 6.7.9 installed in the middle of the front part of the gantry 6.7.4. The two ends of the base 6.7.1 are respectively fixed to the opposite side walls of the upright plate 6.3 and the upright plate 6.2. After slitting, each group of paper strips is initially adjusted by the alignment roller 6.5 before entering the corresponding centering mechanism 6.7. Position sensor 6.7.9 detects the lateral position of the paper strip. When the paper strip deviates from the center position, telescopic cylinder 6.7.3 pushes slide plate 6.7.2 and gantry 6.7.4 to move laterally, thereby adjusting the lateral position of the centering roller 6.7.5 to accurately center the paper strip. Two rolling composite sections 7 are fixed on both sides of the front center of the top face of the base platform 1 and correspond to two sets of centering mechanisms 6.7 respectively. Specifically, the rolling composite section 7 includes a base cabinet 7.1 fixed to the front face of the top face of the base platform 1, a pair of side cavities 7.2 and side plates 7.3 fixed parallel to each other on both sides of the top surface of the base cabinet 7.1, and two composite pressure rollers 7.4 that rotate synchronously in opposite directions to roll and composite each set of aligned paper tapes and convey them forward. The two ends of the inner shaft of the composite pressure roller 7.4 are rotatably sleeved to the side cavity 7.2 and the side plate 7.3 respectively. The inner shafts of the two composite pressure rollers 7.4 are fixedly fitted with mutually meshing gear five 7.5 at one end of the inner cavity of the side cavity 7.2. The inner cavity of the side cavity 7.2 is located between the two gear five 7.5 and is rotatably installed with two mutually meshing gear six 7.6 that mesh with the corresponding gear five 7.5 respectively. The outer wall of the side cavity 7.2 is equipped with a motor seven 7.7 that drives one of the gear five 7.5 and gear six 7.6 to rotate. When motor 7.7 rotates, it drives two composite pressure rollers 7.4 to rotate synchronously in opposite directions through the transmission of gears 7.5 and 7.6. The paper tapes (corresponding to the layers of the product) after being aligned by the grouping and centering section 6 are stacked together when they enter the rolling and laminating section 7. They are rolled and laminated by the two composite pressure rollers 7.4 to form a multi-layer composite paper towel, which is then conveyed forward to the subsequent workstation. The working principle is as follows: First, the wide-width tissue roll is placed on the support roller 2.10.4 of the adjusting assembly 2.10 using a lifting device. The vertical position of the roll is adjusted by the telescopic cylinder 2.11, aligning the center of the roll shaft with the center of the support shaft 2.7. Then, the lateral position of the roll is adjusted by the telescopic cylinder 2.10.5, so that the right end face of the roll rests against the limiting plate 2.4. Next, the telescopic cylinder 2.9 pulls the push-pull frame 2.8, causing the prism shaft 2.7.1 to move to the right, passing through the inner cavity of the roll shaft and inserting into the prism cavity 2.3.1 of the main shaft 2.3. The push rod 2.7.3 enters the cylindrical cavity 2.7.1.1. The inner end face of the cylindrical cavity 2.7.1.1 applies a leftward thrust to the push rod 2.7.3. The right disc 2.7.2.1 compresses the spring 2.7.2.4 to the left and gradually approaches the left disc 2.7.2.1. The discs 2.7.2.1 that are approaching each other push the grooved strip 2.7.2.2 outward through the connecting rod 2.7.2.3, so that the grooved strip 2.7.2.2 extends outward radially from the strip groove 2.7.1.2, tightening the inner wall of the mother roll shaft and completing the fixation of the mother roll. The power unit inside the power cabinet 2.2 drives the main shaft 2.3 to rotate, which in turn drives the support shaft 2.7 and the mother roll to rotate together, releasing the paper tape from the mother roll. The paper tape is then conveyed by the drive roller 3.3 of the rear drive unit 3 and corrected by the correction roller 4.4 of the correction unit 4 before entering the slitting unit 5. In the slitting unit 5, the annular blade 5.3.1 and the annular blade groove 5.3.2 cooperate to cut the wide paper tape into multiple narrow paper tapes. In this embodiment, the wide paper tape is cut into six narrow paper tapes, which are then rolled together to form two three-layer paper tapes. After being slit, the six narrow paper strips are conveyed by the drive roller 3.3 of the front drive unit 3 and then enter the group centering unit 6. After the two groups of paper strips pass over the support roller 6.4, each paper strip passes over its corresponding alignment roller 6.5 for initial alignment. For example, in each group, the rightmost paper strip is supported on the right side of the upper alignment roller 6.5, the middle paper strip is supported on the middle alignment roller 6.5, and the leftmost paper strip is supported on the left side of the lower alignment roller 6.5. Then, they enter the corresponding centering mechanism 6.7. When the paper strips are positioned between the support roller 6.4 and the alignment roller 6.5, they are in a relaxed state, i.e., naturally drooping. The position sensor 6.7.9 of the centering mechanism 6.7 detects the lateral position of the paper strips and adjusts the lateral position of the centering roller 6.7.5 via the telescopic cylinder 6.7.3, ensuring precise centering of the two groups of paper strips. After centering, the two sets of paper tapes enter the rolling and laminating section 7 for rolling and laminating. In each rolling and laminating section 7, two laminating rollers 7.4 rotate synchronously in opposite directions to roll and laminate, forming a three-layer composite paper towel, which is then conveyed forward to the subsequent workstation to complete the entire production process. It should be noted that in this article, relational terms such as first and second are only used to refer to... Distinguishing one entity or operation from another does not necessarily require or imply any such actual relationship or order between those entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paper towel multi-layer simultaneous centering and lamination device, characterized by: It includes an unwinding section (2), a base platform (1) located on the left front of the unwinding section (2) and extending longitudinally, and a drive section (3), a correction section (4), a slitting section (5), a drive section (3), a grouping and centering section (6), and a rolling composite section (7) that are sequentially fixed to the top surface of the base platform (1) from back to front. The unwinding section (2) includes a base (2.1), a power cabinet (2.2) fixed to the right side of the top surface of the base (2.1), a vertical plate (2.5) fixed to the left side of the top surface of the base (2.1), a main shaft (2.3) fixedly connected to the power output shaft on the inner side of the top of the power cabinet (2.2), a support shaft (2.7) movably sleeved on the top of the vertical plate (2.5) and slidably sleeved and matched with the main shaft (2.3), a power component for driving the support shaft (2.7) to move laterally, and an adjustment component (2.10) located above the middle of the base (2.1) for supporting the vertical and lateral movement of the master roll. The support shaft (2.7) includes an inner support mechanism (2.7.2) with an inner cavity that extends outward after being sleeved with the main shaft (2.3). The drive unit (3) includes a pair of drive rollers (3.3) that rotate synchronously in opposite directions to convey the paper tape forward. The correction unit (4) includes a laterally movable gantry (4.3) and a pair of correction rollers (4.4) rotatably mounted in the gantry (4.3) and rotating synchronously in opposite directions to convey the paper tape forward. The slitting section (5) includes a pair of slitting rollers (5.3) that rotate synchronously in opposite directions to convey the paper tape forward. One of the slitting rollers (5.3) has a plurality of annular blades (5.3.1) evenly fixed in the transverse direction, and the outer peripheral wall of the other slitting roller (5.3) is provided with annular grooves (5.3.2) that correspond one-to-one with the annular blades (5.3.1). The group centering section (6) includes a second support roller (6.4) extending laterally, a plurality of adjusting rollers (6.5) arranged in parallel to the front side of the second support roller (6.4) and arranged vertically, a fifth motor (6.6) for driving the adjusting rollers (6.5) to rotate, and a centering mechanism (6.7) located in front of each adjusting roller (6.5). Each group of paper strips after slitting passes through the adjusting rollers (6.5) and the centering mechanism (6.7) in sequence to complete the centering. The rolling lamination section (7) includes two synchronously rotating, counter-rotating lamination rollers (7.4) for rolling lamination and forward conveying of each set of aligned paper tapes.

2. A paper towel multi-layer simultaneous centering and lamination device according to claim 1, characterized in that: The adjusting roller (6.5) includes a central shaft (6.5.1) fixedly connected at one end to the power output shaft of the motor (6.6), and a fixed sleeve on the central shaft (6.5.1). 6.5.1) Two straight roller sections (6.5.2) on both sides of the middle section and variable diameter rollers (6.5.3) fixedly sleeved on the central shaft (6.5.1) and respectively connected to both ends of the straight roller section (6.5.2). The outer diameter of the variable diameter roller (6.5.3) gradually decreases in the direction close to the straight roller section (6.5.2).

3. The multi-layer synchronous centering and laminating device for tissue paper according to claim 2, characterized in that: The centering mechanism (6.7) includes a horizontally arranged base four (6.7.1), a sliding plate (6.7.2) slidably engaged with the top surface of the base four (6.7.1), a telescopic cylinder four (6.7.3) fixedly fixed in the base four (6.7.1) with the piston rod end fixedly connected to the bottom surface of the sliding plate (6.7.2), a gantry four (6.7.4) with its bottom ends respectively fixed to the top surfaces of the sliding plate (6.7.2), and a pair of parallel structures with their ends rotatably sleeved on the side walls of the gantry four (6.7.4). The centering roller (6.7.5), the gear four (6.7.6) fixedly sleeved on one end of the two centering rollers (6.7.5) and meshing with each other, the side frame four (6.7.7) fixed to the outer wall of the gantry four (6.7.4) and located outside the gear four (6.7.6), the motor six (6.7.8) fixed to the outer wall of the side frame four (6.7.7) and used to drive one of the centering rollers (6.7.5) to rotate, and the position sensor three (6.7.9) installed in the middle of the front part of the gantry four (6.7.4).

4. The multi-layer synchronous centering and laminating device for paper towels according to claim 3, characterized in that: The grouping middle part (6) also includes a base plate (6.1) fixed to the top surface of the base platform (1), a second upright plate (6.2) with its bottom end fixed to both sides of the top surface of the base plate (6.1), and a third upright plate (6.3) with its bottom end fixed to the middle of the front of the top surface of the base plate (6.1). The two ends of the second support roller (6.4) are respectively rotatably sleeved on the rear end of the top of the second upright plate (6.2). The two ends of the central shaft (6.5.1) are respectively rotatably sleeved on the position of the second upright plate (6.2) corresponding to the front side of the second support roller (6.4). The fifth motor (6.6) is fixed to the outer side wall of the second upright plate (6.2). The two ends of the fourth base (6.7.1) are respectively fixed to the opposite side wall of the third upright plate (6.3) and the second upright plate (6.2).

5. The multi-layer synchronous centering and laminating device for paper towels according to claim 1, characterized in that: The unwinding section (2) also includes a push-pull bracket (2.8), a limiting plate (2.4) is sleeved on the left end of the main shaft (2.3), a prism cavity (2.3.1) is provided at the axial position of the main shaft (2.3), a bushing (2.6) is rotatably sleeved on the top of the upright plate (2.5), and the support shaft (2.7) also includes a prism shaft that is slidably sleeved and matched with the bushing (2.6) and the prism cavity (2.3.1). 2.7.1) and top rod (2.7.3), the left end of the prism shaft (2.7.1) is provided with a shaft head (2.7.1.3), the push-pull frame (2.8) includes a bushing two (2.8.1) rotatably sleeved on the shaft head (2.7.1.3), a vertical beam (2.8.2) with its top end fixed to the bottom of the bushing two (2.8.1), and a linear bearing (2.8.3) sleeved on the side wall of the vertical beam (2.8.2), the vertical A guide rod (2.12) is fixed to the outer wall of plate 1 (2.5) and slidably sleeved with the linear bearing (2.8.3). A telescopic cylinder 1 (2.9) is installed in the middle of the top surface of the base 1 (2.1), extending laterally and with its piston rod passing through the vertical plate 1 (2.5) and fixedly connected to the bottom end of the vertical beam (2.8.2). A cylindrical cavity is provided inside the right side of the middle part of the prism shaft (2.7.1) and slidably sleeved with the top rod (2.7.3). 2.7.1.1), the outer peripheral wall of the prism axis (2.7.1) corresponds to the cylindrical cavity ( 2.7.1.1) A strip-shaped groove extending axially is provided at the left end. 2.7.1.2), the internal support mechanism (2.7.2) includes a pair of slidably sleeved in the cylindrical cavity ( 2.7.1.1) A disc (2.7.2.1) at the left end, a spring (2.7.2.4) with both ends connected to the inner wall of the disc (2.7.2.1), a grooved strip (2.7.2.2) located around the spring (2.7.2.4) and slidably engaged with the corresponding strip groove (2.7.1.2), and a connecting rod (2.7.2.3) hinged to both ends of the grooved strip (2.7.2.2). The outer peripheral wall of the disc (2.7.2.1) is provided with a slot that is hinged to the outer end of the connecting rod (2.7.2.3). 2.7.2.1.1), the center of the disc (2.7.2.1) is provided with a screw hole (2.7.2.1.2), and the left end of the push rod (2.7.3) is provided with a screw (2.7.3.1) that is threadedly connected to the screw hole (2.7.2.1.2).

6. The multi-layer synchronous centering and laminating device for paper towels according to claim 1, characterized in that: The adjusting assembly (2.10) includes a base two (2.10.1), a slide (2.10.2) slidably engaged with the top surface of the base two (2.10.1), ear plates (2.10.3) fixed at the four corners of the top surface of the slide (2.10.2), a pair of support rollers (2.10.4) extending laterally and rotatably sleeved at both ends on the corresponding ear plates (2.10.3), and a component laterally installed inside the base two (2.10.1). Telescopic cylinder 2 (2.10.5) is fixedly connected to the bottom of the slide block (2.10.2) at the end of the piston rod. Telescopic cylinder 3 (2.11) is fixedly connected to the top of the piston rod at the four corners of the base 2 (2.10.1) at the bottom of the inner side wall of the power cabinet (2.2) and the upright plate 1 (2.5). Position sensor 1 (2.13) is installed on the left side of the front part of the top of the power cabinet (2.2).

7. The multi-layer synchronous centering and laminating device for paper towels according to claim 1, characterized in that: The drive unit (3) further includes a base cabinet (3.1) fixed to the top surface of the base platform (1) and a door frame (3.2) with its bottom ends fixed to the top surfaces of the base cabinet (3.1). The two ends of the drive roller (3.3) are respectively rotatably sleeved on the side wall of the door frame (3.2). One end of each of the two drive rollers (3.3) is respectively fixedly sleeved with a gear (3.4) that meshes with each other. A side frame (3.5) is fixed on the outer side wall of the door frame (3.2) corresponding to the gear (3.4). A motor (3.6) for driving one of the drive rollers (3.3) to rotate is installed on the outer side of the side frame (3.5).

8. The multi-layer synchronous centering and laminating device for paper towels according to claim 1, characterized in that: The correction unit (4) further includes a base cabinet two (4.1) fixed to the top surface of the base platform (1), a base three (4.2) fixed laterally to the top surface of the base cabinet two (4.1), a motor three (4.8) fixed to the outer wall of one end of the base three (4.2), a drive screw (4.9) with both ends rotatably sleeved on the middle of the two side walls of the base three (4.2) and one end fixedly connected to the power output shaft of the motor three (4.8), and a screw nut (4.10) threaded onto the drive screw (4.9). The bottom of the gantry two (4.3) is slidably engaged with the base cabinet two (4.1). At the top of the base three (4.2), the lead screw nut (4.10) is fixedly connected to the bottom of the gantry two (4.3). Two straightening rollers (4.4) are respectively fixedly sleeved with meshing gear two (4.5) at one end. A side frame two (4.6) is fixed on the outer wall of the gantry two (4.3) corresponding to the gear two (4.5). A motor two (4.7) for driving one of the straightening rollers (4.4) to rotate is installed on the outer side of the side frame two (4.6). Position sensors two (4.11) are respectively installed on both sides of the middle of the rear end of the top surface of the base cabinet two (4.1).

9. The multi-layer synchronous centering and laminating device for paper towels according to claim 1, characterized in that: The slitting section (5) further includes a base cabinet three (5.1) fixed to the top surface of the base platform (1) and a door frame three (5.2) fixed to the top surface of the base cabinet three (5.1) on both sides. The two ends of the slitting roller (5.3) are respectively rotatably sleeved on the side wall of the door frame three (5.2). One end of each of the two slitting rollers (5.3) is respectively fixedly sleeved with a gear three (5.4) that meshes with each other. A side frame three (5.5) is fixed on the outer side wall of the door frame three (5.2) corresponding to the gear three (5.4). A motor four (5.6) for driving one of the slitting rollers (5.3) to rotate is installed on the outer side of the side frame three (5.5).

10. A multi-layer synchronous centering and laminating device for paper towels according to claim 1, characterized in that: The rolling composite part (7) also includes a base cabinet four (7.1) fixed to the front end of the top surface of the base platform (1) and a pair of side cavities (7.2) and side plates (7.3) fixed parallel to each other on both sides of the top surface of the base cabinet four (7.1). The two ends of the inner shaft of the composite pressure roller (7.4) are respectively rotatably sleeved on the side cavity (7.2) and the side plate (7.3). The two inner shafts of the composite pressure roller (7.4) are fixedly fitted with mutually meshing gear five (7.5) at one end of the inner cavity of the side cavity (7.2). The inner cavity of the side cavity (7.2) is located between the two gear five (7.5) and is rotatably installed with two mutually meshing gear six (7.6) that mesh with each other and are respectively meshed with the corresponding gear five (7.5). The outer wall of the side cavity (7.2) is equipped with a motor seven (7.7) that drives one of the gear five (7.5) and gear six (7.6) to rotate.

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