An adaptive positioning and creasing apparatus for paper towel folding

Abstract

This invention relates to the field of tissue paper production equipment technology, specifically an adaptive positioning and folding device for tissue paper folding. It includes an unwinding section, a main drive assembly, a roller printing assembly, two correction assemblies located at the front and rear of the roller printing assembly, a longitudinal folding assembly, and a transverse folding assembly. The correction assemblies detect paper tape deviation using position sensors and use telescopic cylinders to drive the correction rollers to move horizontally for adaptive correction. The longitudinal folding assembly uses a crease rolling mechanism to roll creases on both sides of the middle of the paper tape, making the cross-section of the paper tape N-shaped, which, in conjunction with a vertical conveyor belt with gradually decreasing spacing, completes the longitudinal folding. The transverse folding assembly uses a slitting mechanism to cut the paper tape into segments, which are then conveyed along a three-segment path. At corners, the folding mechanism presses down to change the direction, completing the transverse folding. By integrating unwinding, printing, correction, longitudinal folding, slitting, and transverse folding into one unit, the problem of discrete and non-integrated equipment is effectively solved, which is beneficial for improving folding accuracy and production efficiency.

Description

[0001] This invention relates to the field of tissue paper production equipment technology, specifically to an adaptive positioning and folding device for tissue paper folding. Background Technology

[0002] Handkerchief tissues, as a portable cleaning product, are typically made by folding a single square tissue multiple times horizontally and vertically to form a compact rectangular folded block for easy packaging and use. Traditional handkerchief tissue production lines usually consist of multiple independent pieces of equipment: unwinding machines, slitting and printing machines, horizontal folding machines, vertical folding machines, and stacking machines. Each piece of equipment has its own frame, drive motor, and control system, and the equipment is connected by multiple conveyor belts or transition plates. This discrete layout has the following prominent problems: Space and cost: Multiple devices are arranged independently, which requires a large area and high investment costs. Error accumulation: Each time the paper towel passes through a device transition (such as from the output of the slitting and printing machine to the input of the horizontal folding machine), a new offset will occur in the position of the paper towel. After multiple errors accumulate, the folding accuracy will be severely reduced. Poor adaptability: When changing the size of the paper towels or adjusting the folding process, multiple machines need to be adjusted separately, which is time-consuming and labor-intensive. While some existing technologies attempt to merge adjacent processes, no solution has yet emerged that fully integrates slitting, printing, horizontal folding, and vertical folding. Summary of the Invention

[0003] The purpose of this invention is to provide an adaptive positioning and folding device for tissue paper folding, which solves the problem of discrete and non-integrated tissue paper folding and forming processing equipment in the prior art. To achieve the above objectives, the present invention provides the following technical solution: an adaptive positioning and folding device for folding tissue paper, including an unwinding section and a main drive assembly located in front of the unwinding section, and further including a roller printing assembly, a correction assembly, a longitudinal folding assembly and a transverse folding assembly. The roll printing assembly includes a vertical frame located in front of the main drive assembly, a pair of printing rollers rotatably mounted on the upper and lower sides of the middle of the vertical frame cavity, and a drive mechanism for driving the two printing rollers to rotate synchronously in opposite directions to achieve roll printing on the paper strip and forward conveying the paper strip. There are two correction components, which are located on the front and rear sides of the roll printing component, respectively, and are used to correct the deviation of the paper tape before and after the roll printing process. The longitudinal folding assembly includes a base cabinet three located in front of the front correction assembly, a horizontal belt conveyor with its front end fixedly supported on the top surface of the base cabinet three and its rear end extending to the discharge point of the front correction assembly, a crease rolling mechanism located at the rear end of the horizontal belt conveyor frame for rolling indentations on both sides of the middle of the paper tape to make the cross-section of the paper tape N-shaped, two vertical conveyor belts located on both sides of the middle of the top surface of the horizontal belt conveyor with their spacing gradually decreasing forward, and a linkage mechanism for synchronously driving the two vertical conveyor belts to convey the paper tape forward from both sides. The transverse folding assembly includes a base cabinet four located in front of the base cabinet three, a slitting mechanism located at the rear of the top surface of the base cabinet four for forward conveying and slitting the longitudinally folded paper tape into segments, multiple conveying mechanisms located on the top surface of the base cabinet four for conveying the segmented paper tape along a three-segment path of longitudinal-transverse-longitudinal, and folding mechanisms located at two corners in the three-segment conveying path. The folding mechanism is equipped with a pressure plate for pressing the segmented paper tape to change its conveying direction. A groove is embedded in the front of the top surface of the base cabinet four at the position opposite the end of the segmented paper tape conveying path. Furthermore, the main drive assembly includes a base cabinet, a door frame fixed to the top surface of the base cabinet on both sides of the bottom end, a pair of drive rollers arranged parallel to each other on the upper and lower sides of the inner cavity of the door frame and rotatably sleeved on one side wall of the door frame at both ends, a gear fixedly sleeved on the ends of the two drive rollers and meshing with each other, and a motor for driving one of the drive rollers to rotate. Furthermore, the correction assembly includes a base cabinet, a door frame two fixed to the top surface of the base cabinet two on both sides of the bottom end, a pair of bearing seats installed on the upper and lower sides of the middle of the side walls of the door frame two, a pair of parallel correction rollers with the two ends of the central shaft slidingly sleeved on the bearing seats in the horizontal direction, a telescopic cylinder one for driving the two correction rollers to move horizontally, and a power mechanism for driving the two correction rollers to rotate synchronously in opposite directions. A position sensor one for detecting the paper tape deviation is installed on both sides of the middle of the rear end of the top plate of the door frame two. Furthermore, a bushing is rotatably fitted in the middle of the bearing seat, and a prism that slides axially with the bushing is fixedly fitted in the center of the correction roller. Limiting rings are provided at both ends of the outer peripheral wall of the correction roller. A pin is connected to the right end of the prism. Two meshing gears are fixedly fitted at the outer ends of the two bushings on the right outer wall of the second gantry. A support housing is fixed on the right outer wall of the second gantry near one of the gears. A gear three that meshes with the corresponding gear two is rotatably fitted inside the support housing. A motor two for driving the gear three to rotate is fixed on the outer wall of the support housing. The piston cylinder of the telescopic cylinder is vertically fixed on the right outer wall of the second gantry. A T-shaped frame is fixed at the end of the piston rod of the telescopic cylinder. The other two ends of the T-shaped frame are rotatably fitted with two pins. Furthermore, it also includes a base extending longitudinally, and the top surface of the base is fixed with an unwinding section, a main drive assembly, a correction assembly, a roller printing assembly, a correction assembly, a longitudinal folding assembly, and a transverse folding assembly in sequence from back to front. Furthermore, a base frame is fixed to the bottom of the vertical frame, and the base frame is fixedly snapped onto the base platform. Gear four is fixedly mounted on the right end of the central shaft of the printing roller. Two gear five are rotatably installed on the right side of the vertical frame between the two gear four, and each gear five meshes with the corresponding gear four. A motor three is installed on the outer wall of the right side of the vertical frame to drive one of the gear four and gear five to rotate. A guide plate one extending forward is fixed at the front end of the vertical frame directly opposite the top of the printing roller below. Furthermore, the top surfaces of the side beams on both sides of the horizontal belt conveyor are respectively fixed with support frames for suspending the corresponding vertical conveyor belt frames. At the rear end of the horizontal belt conveyor frame, corresponding to the belt surface, a rearwardly extending guide plate is fixed. The crease rolling mechanism includes paired support plates fixed to the rear ends of the side beams on both sides of the horizontal belt conveyor, paired parallel crease rollers with their ends rotatably sleeved on the side walls of the support plates, a gear six fixedly fitted onto the left ends of the central shafts of the two crease rollers and meshing with each other, and a gear six installed on the outer wall of the right support plate for driving one of the crease rollers. The roller motor that rotates the indentation roller has annular recesses on the left side of the middle of the upper indentation roller and on the right side of the middle of the lower indentation roller, and annular protrusions on the right side of the middle of the upper indentation roller and on the left side of the lower indentation roller, corresponding to the annular recesses. The linkage mechanism includes a plate frame with both ends fixed to the support frame, a gear seven with a central shaft rotatably sleeved on both sides of the middle of the bottom surface of the plate frame and meshing with each other, and a motor four installed on the top surface of the plate frame for driving the corresponding gear seven to rotate. The bottom end of the central shaft of the gear seven is respectively fixedly connected to the top of the conveyor roller at the front end of the vertical conveyor belt on both sides. Furthermore, the slitting mechanism includes a frame fixed to the rear end of the four top surfaces of the base cabinet, two vertical rollers arranged in parallel with their central shaft ends respectively rotatably sleeved on both sides of the middle of the top and bottom plates of the frame, a gear eight fixedly sleeved on the top of the central shaft of the two vertical rollers and meshing with each other, a motor five installed on the top surface of the frame and used to drive one of the vertical rollers to rotate, and a cutter installed axially on the outer wall of the vertical roller. The cutter includes a strip-shaped shell, a strip-shaped blade that is radially slidably engaged with the middle of the outer wall of the strip-shaped shell and has a cutting edge on the outside, a strip fixed to the inside of the strip-shaped blade and radially slidably engaged with the inner cavity of the strip-shaped shell, multiple springs connecting the inner wall of the strip and the inner wall of the cavity of the strip-shaped shell, and a fixing block integrally formed on the inner side of the top of the strip-shaped shell. One side wall of the vertical roller has a slot along the axial direction that matches the sliding engagement with the strip-shaped blade. The inside of the slot has a column cavity that matches the vertical sliding engagement with the strip-shaped shell. The top surface of the vertical roller has a groove that matches the vertical engagement with the fixing block. Furthermore, the transmission mechanism includes a frame two fixed to the top surface of the base cabinet, two vertical rollers two arranged in pairs and rotatably sleeved at both ends of the central shaft on both sides of the top and bottom plate of the frame two, a gear nine fixedly sleeved on the top of the central shaft of the two vertical rollers two and meshing with each other, and a motor six installed on the top surface of the frame two and used to drive one of the vertical rollers two to rotate. Furthermore, the folding mechanism includes a frame three fixed to the top surface of the four cabinets, a column located on the inner side of the frame three, a top pressure plate with its outer end fixed to the side wall of the column, a telescopic cylinder two with the piston cylinder fixed horizontally in the middle of the inner cavity of the frame three and the piston rod passing through the middle of the inner side wall of the frame three and then fixed to the middle of the column, a linear bearing fixedly fitted on the upper and lower sides of the middle of the inner side wall of the frame three, a guide rod slidably fitted to the linear bearing and fixedly connected to the upper and lower sides of the middle of the column, and a position sensor two installed on one side of the inner side wall of the frame three. Compared with the prior art, the beneficial effects of the present invention are: The present invention relates to an adaptive positioning and folding device for folding tissue paper, which integrates unwinding, printing, correction, longitudinal folding, slitting, and transverse folding on the same continuous conveying path, eliminating the need for multiple independent conveyor belts and transition interfaces between traditional devices, and greatly reducing the floor space and equipment investment. The present invention relates to an adaptive positioning and folding device for folding tissues, which effectively eliminates the cumulative positional error caused by multi-segment conveying by setting correction components on the front and rear sides of the roller printing assembly. The present invention relates to an adaptive positioning and folding device for folding tissues. The folding roller mechanism rolls creases on both sides of the middle of the paper strip to make the cross-section of the paper strip N-shaped. It works in conjunction with two vertical conveyor belts with gradually decreasing spacing to achieve longitudinal folding. After being cut into segments by a slitting mechanism, the paper strip is conveyed by a three-segment path and folded laterally at the corner. The device has a compact structure and smooth operation. 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 driving part of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the correction component of the present invention; Figure 4 This is a three-dimensional structural diagram of the bearing seat of the present invention; Figure 5 This is a three-dimensional structural diagram of the correction roller of the present invention; Figure 6 This is a three-dimensional structural diagram of the roller printing assembly of the present invention; Figure 7 This is a three-dimensional structural diagram of the longitudinal folding component of the present invention; Figure 8 This is a three-dimensional structural diagram of the horizontal folding component of the present invention; Figure 9 This is a three-dimensional structural schematic diagram of the cutting mechanism of the present invention; Figure 10 This is a three-dimensional structural diagram of the vertical roller of the present invention; Figure 11This is a three-dimensional structural diagram of the transmission mechanism of the present invention; Figure 12 This is a three-dimensional structural diagram of the folding mechanism of the present invention; Figure 13 For the present invention Figure 7 Enlarged structural diagram at point A; Figure 14 For the present invention Figure 7 Enlarged structural diagram at point B; Figure 15 For the present invention Figure 10 Enlarged structural diagram at point C; Figure 16 This is a schematic diagram illustrating the principle of segmented paper tape folding in this invention. In the diagram: 1 - base platform; 2-Unwinding section; 3-Drive unit; 3.1-Base cabinet one; 3.2-Hall frame one; 3.3-Drive roller; 3.4-Gear one; 3.5-Motor one; 4-Correction Components; 4.1-Base Cabinet II; 4.2-Door Frame II; 4.3-Shaft Seat; 4.3.1-Shaft Sleeve; 4.4-Correction Roller; 4.4.1-Pyramid; 4.4.2-Limiting Ring; 4.4.3-Pin Shaft; 4.5-Gear II; 4.6-Support Housing; 4.7-Gear III; 4.8-Motor II; 4.9-Telescopic Cylinder I; 4.10-T-Frame; 4.11-Position Sensor I; 5-Roller printing assembly; 5.1-Base frame; 5.2-Vertical frame; 5.3-Printing roller; 5.4-Gear four; 5.5-Gear five; 5.6-Motor three; 5.7-Guide plate one; 6-Longitudinal folding assembly; 6.1-Base cabinet three; 6.2-Horizontal belt conveyor; 6.3-Folding rolling mechanism; 6.3.1-Support plate; 6.3.2-Indentation roller; 6.3.2.1-Annular protrusion; 6.3.2.2-Annular recess; 6.3.3-Gear six; 6.3.4-Rolling motor; 6.4-Vertical conveyor belt; 6.5-Linkage mechanism; 6.5.1-Plate frame; 6.5.2-Gear seven; 6.5.3-Motor four; 6.6-Support frame; 6.7-Guide plate two; 7-Horizontal folding assembly; 7.1-Base cabinet four; 7.2-Slitting mechanism; 7.2.1-Frame one; 7.2.2-Vertical roller one; 7.2.2.1-Slot; 7.2.2.2-Column cavity; 7.2.2.3-Sink; 7.2.3-Cutter; 7.2.3.1-Strip blade; 7.2.3.2-Strip shell; 7.2.3.3-Slat; 7.2.3.4-Spring; 7.2.3.5-Fixing block; 7.2.4 7.2.5 Gear 8; 7.3 Motor 5; 7.3 Transmission Mechanism; 7.3.1 Frame 2; 7.3.2 Vertical Roller 2; 7.3.3 Gear 9; 7.3.4 Motor 6; 7.4 Folding Mechanism; 7.4.1 Frame 3; 7.4.2 Column; 7.4.3 Top Pressure Plate; 7.4.4 Telescopic Cylinder 2; 7.4.5 Linear Bearing; 7.4.6 Guide Rod; 7.4.7 Position Sensor 2; 7.5 Slide Groove. 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 1-16 The present invention provides a technical solution, an adaptive positioning and pressing mechanism for folding tissue paper, including a base platform 1 extending longitudinally, and a roll unwinding part 2, a main drive assembly 3, a correction assembly 4, a roller printing assembly 5, a longitudinal folding assembly 6 and a transverse folding assembly 7 fixed sequentially on the top surface of the base platform 1 from back to front. The unwinding section 2 is used to load the rolled paper and continuously transport the paper tape to the subsequent workstation. The main drive assembly 3 includes a base cabinet 3.1, a frame 3.2 fixed to the top surface of the base cabinet 3.1 on both sides of its bottom end, a pair of drive rollers 3.3 parallel to each other on the upper and lower sides of the inner cavity of the frame 3.2 and rotatably sleeved at both ends on the side walls of the frame 3.2, a gear 3.4 fixedly sleeved at the ends of the two drive rollers 3.3 and meshing with each other, and a motor 3.5 for driving one of the drive rollers 3.3 to rotate. The two drive rollers 3.3 achieve synchronous counter-rotation through the meshing of the gear 3.4, providing a stable traction force for the paper tape passing through. The correction assembly 4 includes a base cabinet 4.1, a frame 4.2 fixed to the top surface of the base cabinet 4.1 on both sides of its bottom end, a pair of bearing seats 4.3 installed on the upper and lower sides of the middle of the side walls of the frame 4.2, a pair of parallel correction rollers 4.4 with their central shaft ends slidingly sleeved on the bearing seats 4.3 in the horizontal direction, a telescopic cylinder 4.9 for driving the two correction rollers 4.4 to move horizontally, and a power mechanism for driving the two correction rollers 4.4 to rotate synchronously in opposite directions. Position sensors 4.11 for detecting paper tape deviation are installed on both sides of the middle of the rear end of the top plate of the frame 4.2. Specifically, a bushing 4.3.1 is rotatably fitted in the middle of the bearing seat 4.3. A prism 4.4.1, which is axially slidingly fitted and matched with the bushing 4.3.1, is fixedly fitted in the center of the straightening roller 4.4. The right end of the prism 4.4.1 is connected to a pin 4.4.3. Limiting rings 4.4.2 are respectively provided at both ends of the outer peripheral wall of the straightening roller 4.4. Two bushings 4.3.1 on the right outer wall of the gantry 4.2 are respectively fixedly fitted with meshing gears 4.5. A support housing 4.6 is fixedly fixed on the right outer wall of the gantry 4.2 near one of the gears 4.5. A gear 4.7 that meshes with the corresponding gear 4.5 is rotatably fitted inside the support housing 4.6. A motor 4.8 for driving the rotation of gear 4.7 is fixed on the outer wall of the support housing 4.6. The piston cylinder of telescopic cylinder 4.9 is vertically fixed to the outer right side of the gantry 4.2. The end of the piston rod of telescopic cylinder 4.9 is fixed with a T-shaped frame 4.10. The other two ends of the T-shaped frame 4.10 are respectively rotatably connected to two pins 4.4.3. The working principle of the paper tape correction assembly 4 is as follows: Position sensor 4.11 detects the position of both sides of the paper tape in real time. When paper tape deviation is detected, telescopic cylinder 4.9 drives two prisms 4.4.1 to slide horizontally along the axial direction of bushing 4.3.1 through T-shaped frame 4.10 and pin 4.4.3, thereby driving two correction rollers 4.4 to move horizontally synchronously and correct the paper tape to the correct position. At the same time, motor 4.8 drives bushing 4.3.1 to rotate through the meshing transmission of gears 4.7 and 4.5, which in turn drives the correction rollers 4.4.1 to rotate, realizing continuous feeding of the paper tape. The two correction rollers 4.4 achieve axial displacement while rotating and feeding through the axial sliding engagement of prism 4.4.1 and bushing 4.3.1, without interfering with each other. Two correction components 4 are respectively located on the front and rear sides of the roller printing component 5. They are used to correct the deviation of the paper tape before and after roller printing, so as to ensure that the paper tape is in the correct position when it enters the printing station and maintains the correct position when it enters the longitudinal folding station after printing. The roller printing assembly 5 includes a vertical frame 5.2 located in front of the main drive assembly 3, two printing rollers 5.3 rotatably mounted on the upper and lower sides of the cavity of the vertical frame 5.2, and a drive mechanism for driving the two printing rollers 5.3 to rotate synchronously in opposite directions to achieve roller printing on the paper strip and forward conveying the paper strip. A base frame 5.1 is fixed to the bottom of the vertical frame 5.2 and is fixedly snapped onto the base platform 1. Gear 4 5.4 is fixedly mounted on the right end of the central shaft of each printing roller 5.3. Two gear 5.5 are rotatably mounted on the right side of the vertical frame 5.2, located between the two gear 4 5.4, meshing with each other and respectively with their corresponding gear 4 5.4. A motor 3 5.6 is mounted on the outer wall of the right side of the vertical frame 5.2 to drive one of the gear 4 5.4 and gear 5.5. A forward-extending guide plate 5.7 is fixed at the front end of the vertical frame 5.2, directly opposite the top of the lower printing roller 5.3, to smoothly guide the printed paper strip to the next station. The longitudinal folding assembly 6 includes a base cabinet 6.1 located in front of the front correction assembly 4; a horizontal belt conveyor 6.2 whose front end is fixedly supported on the top surface of the base cabinet 6.1 and whose rear end extends to the discharge point of the front correction assembly 4; a crease rolling mechanism 6.3 located at the rear end of the frame of the horizontal belt conveyor 6.2 for rolling indentations on both sides of the middle of the paper tape to make the cross-section of the paper tape N-shaped; two vertical conveyor belts 6.4 located on both sides of the middle of the top surface of the horizontal belt conveyor 6.2 with the spacing gradually decreasing forward; and a linkage mechanism 6.5 for synchronously driving the two vertical conveyor belts 6.4 to convey the paper tape forward from both sides. Support frames 6.6 for suspending the corresponding vertical conveyor belts 6.4 are fixed on the top surface of the side beams on both sides of the horizontal belt conveyor 6.2. A rearwardly extending guide plate 6.7 is fixed at the rear end of the frame of the horizontal belt conveyor 6.2 corresponding to the tape surface, for guiding the paper tape from the front correction assembly 4 to the tape surface of the horizontal belt conveyor 6.2. The crease rolling mechanism 6.3 includes a pair of support plates 6.3.1 fixed to the rear ends of the side beams on both sides of the horizontal belt conveyor 6.2; a pair of parallel creasing rollers 6.3.2 rotatably sleeved at both ends on the side walls of the support plates 6.3.1; a gear 6.3.3 fixedly fitted onto the left ends of the central shafts of the two creasing rollers 6.3.2 and meshing with each other; and a rolling motor 6.3.4 installed on the outer side wall of the right support plate 6.3.1 to drive one of the creasing rollers 6.3.2 to rotate. The upper creasing roller 6.3.2 has an annular recess 6.3.2.2 on its left side and the lower creasing roller 6.3.2 has an annular protrusion 6.3.2.1 corresponding to the annular recess 6.3.2.2 on its right side and the lower creasing roller 6.3.2 has an annular protrusion 6.3.2.1 on its right side and the left side. During operation, the paper strip passes between the upper and lower creasing rollers 6.3.2. The annular protrusion 6.3.2.1 and the annular concave part 6.3.2.2 cooperate to roll two indentations on both sides of the middle of the paper strip, making the cross-section of the paper strip N-shaped, so as to facilitate subsequent longitudinal folding. The linkage mechanism 6.5 includes a plate frame 6.5.1 fixed at both ends to the support frame 6.6, gears 6.5.2 with a central shaft rotatably sleeved on both sides of the bottom center of the plate frame 6.5.1 and meshing with each other, and a motor 6.5.3 installed on the top surface of the plate frame 6.5.1 to drive the corresponding gears 6.5.2 to rotate. The bottom end of the central shaft of the gears 6.5.2 is respectively fixedly connected to the top of the conveyor rollers at the front end of the vertical conveyor belts 6.4 on both sides. The motor 6.5.3 drives one of the gears 6.5.2 to rotate, and the meshing of the two gears 6.5.2 achieves synchronous reverse rotation, thereby driving the vertical conveyor belts 6.4 on both sides to convey the paper tape forward from both sides. As the distance between the two vertical conveyor belts 6.4 gradually decreases forward, the paper tape is gradually gathered during forward conveying, and longitudinal folding is completed with the help of N-shaped indentation. The transverse folding assembly 7 includes a base cabinet 7.1 located in front of the base cabinet 3 6.1, a slitting mechanism 7.2 located at the rear end of the top surface of the base cabinet 4 7.1 for forward conveying and slitting the longitudinally folded paper tape into segments, multiple conveying mechanisms 7.3 located on the top surface of the base cabinet 4 7.1 for conveying the segmented paper tape along a three-segment path of longitudinal-transverse-longitudinal, and folding mechanisms 7.4 located at two corners in the three-segment conveying path. The folding mechanism 7.4 is provided with a pressure plate 7.4.3 for pressing the segmented paper tape to change its conveying direction. A groove 7.5 is embedded in the front of the top surface of the base cabinet 4 7.1 at the position opposite to the end of the segmented paper tape conveying path. The slitting mechanism 7.2 includes a frame 7.2.1 fixed to the rear end of the top surface of the base cabinet 7.1, two vertical rollers 7.2.2 arranged in parallel with their central shaft ends rotatably sleeved on both sides of the middle of the top and bottom plates of the frame 7.2.1, a gear 7.2.4 fixedly sleeved on the top ends of the central shafts of the two vertical rollers 7.2.2 and meshing with each other, a motor 7.2.5 installed on the top surface of the frame 7.2.1 and used to drive one of the vertical rollers 7.2.2 to rotate, and a cutter 7.2.3 axially installed on the outer wall of the vertical roller 7.2.2. The cutter 7.2.3 includes a strip-shaped housing 7.2.3.2, a strip-shaped blade 7.2.3.1 that is radially slidably engaged with the middle of the outer wall of the strip-shaped housing 7.2.3.2 and has a cutting edge on the outer side, a strip 7.2.3.3 that is fixed to the inner side of the strip-shaped blade 7.2.3.1 and radially slidably engaged with the inner cavity of the strip-shaped housing 7.2.3.2, multiple springs 7.2.3.4 that connect the inner wall of the strip 7.2.3.3 and the inner wall of the cavity of the strip-shaped housing 7.2.3.2, and a fixing block 7.2.3.5 integrally formed on the inner side of the top of the strip-shaped housing 7.2.3.2. The vertical roller 7.2.2 has an axially oriented slot 7.2.2.1 on its side wall that slides and engages with the strip blade 7.2.3.1. The inner side of the slot 7.2.2.1 has a cylindrical cavity 7.2.2.2 that slides and engages vertically with the strip housing 7.2.3.2. The top surface of the vertical roller 7.2.2 has a recess 7.2.2.3 that vertically engages with the fixing block 7.2.3.5. During installation, the cutter 7.2.3 is inserted from the top of the vertical roller 7.2.2. The strip housing 7.2.3.2 slides along the cylindrical cavity 7.2.2.2, and the strip blade 7.2.3.1 slides along the slot 7.2.2.1 until the fixing block 7.2.3.5 is engaged and positioned in the recess 7.2.2.3. Spring 7.2.3.4 provides radial elastic force to strip 7.2.3.3, allowing strip blade 7.2.3.1 to float elastically during cutting, ensuring cutting reliability while avoiding damage to the blade from rigid impact. The conveying mechanism 7.3 includes a frame 7.3.1 fixed to the top surface of the base cabinet 7.1; two parallel vertical rollers 7.3.2 with their central shafts rotatably fitted onto the sides of the top and bottom plates of the frame 7.3.1; gears 7.3.3 fixedly fitted onto the top ends of the central shafts of the two vertical rollers 7.3.2 and meshing with each other; and a motor 7.3.4 mounted on the top surface of the frame 7.3.1 for driving one of the vertical rollers 7.3.2 to rotate. Multiple conveying mechanisms 7.3 are arranged along a three-section conveying path to clamp and convey segmented paper tapes. The folding mechanism 7.4 includes a frame 7.4.1 fixed to the top surface of the base cabinet 7.1, a column 7.4.2 located inside the frame 7.4.1, a top pressure plate 7.4.3 with its outer end fixed to the side wall of the column 7.4.2, a telescopic cylinder 7.4.4 with its piston cylinder fixed horizontally in the middle of the inner cavity of the frame 7.4.1 and its piston rod passing through the middle of the inner side wall of the frame 7.4.1 and then fixed to the middle of the column 7.4.2, a linear bearing 7.4.5 fixedly fitted on the upper and lower sides of the middle of the inner side wall of the frame 7.4.1, a guide rod 7.4.6 slidably fitted to the linear bearing 7.4.5 and with its inner end fixedly connected to the upper and lower sides of the middle of the column 7.4.2, and a position sensor 7.4.7 installed on one side of the inner side wall of the frame 7.4.1. Telescopic cylinder 7.4.4 drives the column 7.4.2 to move horizontally. The guide rod 7.4.6, in conjunction with the linear bearing 7.4.5, ensures precise movement. The top pressure plate 7.4.3 moves with the column 7.4.2, pressing down on the corresponding position of the segmented paper tape at the corner, changing its conveying direction and completing the lateral fold. Position sensor 7.4.7 detects whether the segmented paper tape has reached the predetermined position to ensure accurate timing of the top pressure plate 7.4.3's action. The workflow is as follows: The rolled raw paper is installed in the unwinding section 2. The paper strip is pulled into the first correction assembly 4 by the main drive assembly 3. The position sensor 4.11 detects the position of the paper strip, and the telescopic cylinder 4.9 drives the correction roller 4.4 to move horizontally for correction. After correction, the paper strip enters the roller printing assembly 5 and is rolled and printed by the upper and lower printing rollers 5.3. After printing, the paper strip enters the second correction assembly 4 for correction again. Then, the paper strip enters the longitudinal folding assembly 6 via the guide plate 5.7 and the guide plate 6.7, and is rolled and printed by the crease rolling mechanism 6.3. The paper tape is rolled with indentations on both sides of the middle section to make the cross-section N-shaped. It is then conveyed forward by two vertical conveyor belts 6.4 with gradually decreasing spacing to complete the longitudinal folding. The longitudinally folded paper tape enters the transverse folding assembly 7 and is cut into segments by the slitting mechanism 7.2. The segmented paper tape is conveyed by multiple conveying mechanisms 7.3 along a three-segment path of longitudinal-transverse-longitudinal. At the two corners of the three-segment path, the top pressure plate 7.4.3 of the folding mechanism 7.4 presses down to change the conveying direction, completing the transverse folding. Finally, the folded finished product falls into the chute 7.5 for collection. During the transverse folding process, the segmented paper strips are first longitudinally conveyed forward by the rear conveyor mechanism 7.3. When the middle of the segmented paper strip aligns with the top pressure plate 7.4.3 of the first folding mechanism 7.4, the telescopic cylinder 7.4.4 pushes the top pressure plate 7.4.3 through the column 7.4.2, completing the first fold of the paper strip. Simultaneously, the folded paper strip enters the vertical rollers 7.3.2 of the transverse conveyor mechanism 7.3. The folded paper strip is then transversely conveyed by the conveyor mechanism 7.3 until its middle aligns with the top pressure plate 7.4.3 of the second folding mechanism 7.4.3. The second top pressure plate 7.4.3 pushes the middle forward to complete the second fold. Simultaneously, the folded paper strip is forward conveyed by the front conveyor mechanism 7.4 to the chute 7.5. 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. An adaptive positioning and folding device for folding tissue paper, comprising an unwinding section (2) and a main drive assembly (3) disposed in front of the unwinding section (2), characterized in that, Also includes: The roll printing assembly (5) includes a vertical frame (5.2) located in front of the main drive assembly (3), a pair of printing rollers (5.3) rotatably mounted on the upper and lower sides of the cavity of the vertical frame (5.2), and a drive mechanism for driving the two printing rollers (5.3) to rotate synchronously in opposite directions to achieve roll printing on the paper strip and forward conveying the paper strip. Correction components (4): Two correction components (4) are respectively disposed on the front and rear sides of the roller printing component (5) for correcting the deviation of the paper tape before and after roller printing. The longitudinal folding assembly (6) includes a base cabinet three (6.1) located in front of the front correction assembly (4), a horizontal belt conveyor (6.2) whose front end is fixedly supported on the top surface of the base cabinet three (6.1) and whose rear end extends to the discharge point of the front correction assembly (4), a crease rolling mechanism (6.3) located at the rear end of the frame of the horizontal belt conveyor (6.2) and used to roll creases on both sides of the middle of the paper tape to make the cross-section of the paper tape N-shaped, two vertical conveyor belts (6.4) located on both sides of the middle of the top surface of the horizontal belt conveyor (6.2) and whose spacing gradually decreases forward, and a linkage mechanism (6.5) used to synchronously drive the two vertical conveyor belts (6.4) to convey the paper tape forward from both sides respectively. The transverse folding assembly (7) includes a base cabinet four (7.1) located in front of the base cabinet three (6.1), a slitting mechanism (7.2) located at the rear end of the top surface of the base cabinet four (7.1) for forward conveying and slitting the longitudinally folded paper tape into segments, multiple conveying mechanisms (7.3) located on the top surface of the base cabinet four (7.1) for conveying the segmented paper tape along a three-segment path of longitudinal-transverse-longitudinal, and folding mechanisms (7.4) located at two corners in the three-segment conveying path. The folding mechanism (7.4) is provided with a pressure plate (7.4.3) for pressing the segmented paper tape to change its conveying direction. A groove (7.5) is embedded in the front of the top surface of the base cabinet four (7.1) at the position opposite to the end of the segmented paper tape conveying path.

2. A self-adapting positioning and creasing apparatus for paper towel folding according to claim 1, wherein: The main drive assembly (3) includes a base cabinet (3.1), a door frame (3.2) fixed to the top surface of the base cabinet (3.1) on both sides of the bottom end, a pair of drive rollers (3.3) arranged parallel to each other on the upper and lower sides of the inner cavity of the door frame (3.2) and rotatably sleeved on the side wall of the door frame (3.2) at both ends, a gear (3.4) fixedly sleeved on the ends of the two drive rollers (3.3) and meshing with each other, and a motor (3.5) for driving one of the drive rollers (3.3) to rotate.

3. A self-adapting positioning and creasing apparatus for paper towel folding as defined in claim 1, wherein: The correction assembly (4) includes a base cabinet (4.1), a frame (4.2) fixed to the top surface of the base cabinet (4.1) on both sides of the bottom end, a pair of bearing seats (4.3) installed on the upper and lower sides of the middle of the two side walls of the frame (4.2), a pair of parallel correction rollers (4.4) with their central shaft ends slidingly sleeved on the bearing seats (4.3) in the horizontal direction, a telescopic cylinder (4.9) for driving the two correction rollers (4.4) to move horizontally, and a power mechanism for driving the two correction rollers (4.4) to rotate synchronously in opposite directions. A position sensor (4.11) for detecting paper tape deviation is installed on both sides of the middle of the rear end of the top plate of the frame (4.2).

4. A self-adapting positioning and creasing apparatus for paper towel folding according to claim 3, wherein: The bearing seat (4.3) is rotatably fitted with a bushing (4.3.1) in the middle. The center of the straightening roller (4.4) is fixedly fitted with a prism (4.4.1) that slides axially with the bushing (4.3.1). The two ends of the outer peripheral wall of the straightening roller (4.4) are respectively provided with limiting rings (4.4.2). The right end of the prism (4.4.1) is connected to a pin (4.4.3). The outer ends of the two bushings (4.3.1) on the right outer wall of the second gantry (4.2) are respectively fixedly fitted with meshing gears (4.5). The right outer wall of the second gantry (4.2) is close to one of the gears. A support housing (4.6) is fixed at position (4.5). A gear three (4.7) that meshes with the corresponding gear two (4.5) is rotatably fitted inside the support housing (4.6). A motor two (4.8) for driving the gear three (4.7) to rotate is fixed on the outer wall of the support housing (4.6). The piston cylinder of the telescopic cylinder one (4.9) is vertically fixed to the outer right side of the gantry two (4.2). A T-shaped frame (4.10) is fixed to the end of the piston rod of the telescopic cylinder one (4.9). The other two ends of the T-shaped frame (4.10) are respectively rotatably sleeved with the two pins (4.4.3).

5. A self-adapting positioning and creasing apparatus for paper towel folding as defined in claim 1, wherein: It also includes a base platform (1) extending longitudinally, on the top surface of which an unwinding section (2), a main drive assembly (3), a correction assembly (4), a roller printing assembly (5), a correction assembly (4), a longitudinal folding assembly (6), and a transverse folding assembly (7) are fixed in sequence from back to front.

6. The adaptive positioning and folding device for tissue paper folding according to claim 5, characterized in that: The bottom of the vertical frame (5.2) is fixed with a base frame (5.1), which is fixedly snapped onto the base platform (1). Gear four (5.4) is fixedly mounted on the right end of the central shaft of the printing roller (5.3). Two gear five (5.5) are rotatably installed on the right side of the vertical frame (5.2) between the two gear four (5.4) and respectively meshing with each other and each corresponding gear four (5.4). A motor three (5.6) is installed on the outer wall of the right side of the vertical frame (5.2) to drive one of the gear four (5.4) and gear five (5.5) to rotate. A guide plate one (5.7) is fixedly fixed at the front end of the vertical frame (5.2) directly opposite the top of the printing roller (5.3) below.

7. A self-adapting positioning and creasing apparatus for paper towel folding as defined in claim 1, wherein: The top surfaces of the side beams on both sides of the horizontal belt conveyor (6.2) are respectively fixed with support frames (6.6) for suspending the corresponding vertical conveyor belt (6.4) frame. A rearwardly extending guide plate (6.7) is fixed at the rear end of the horizontal belt conveyor (6.2) frame corresponding to the belt surface. The crease rolling mechanism (6.3) includes a pair of support plates (6.3.1) respectively fixed to the rear ends of the side beams on both sides of the horizontal belt conveyor (6.2), and a pair of parallel support plates with their ends rotatably sleeved on... The support plate (6.3.1) includes an indentation roller (6.3.2) on its side wall, a gear six (6.3.3) fixedly fitted to the left end of the central shaft of the two indentation rollers (6.3.2) and meshing with each other, and a rolling motor (6.3.4) installed on the outer side wall of the right support plate (6.3.1) for driving one of the indentation rollers (6.3.2) to rotate. Annular recesses are respectively provided on the left side of the middle of the upper indentation roller (6.3.2) and the right side of the middle of the lower indentation roller (6.3.2). 6.3.2.2), the right side of the middle of the upper indentation roller (6.3.2) and the left side of the lower indentation roller (6.3.2) are respectively provided with annular protrusions (6.3.2.1) corresponding to the annular recess (6.3.2.2). The linkage mechanism (6.5) includes a plate frame (6.5.1) with both ends fixed to the support frame (6.6), a gear seven (6.5.2) with its central shaft rotatably sleeved on both sides of the middle of the bottom surface of the plate frame (6.5.1) and meshing with each other, and a motor four (6.5.3) installed on the top surface of the plate frame (6.5.1) and used to drive the corresponding gear seven (6.5.2) to rotate. The bottom end of the central shaft of the gear seven (6.5.2) is respectively fixedly connected to the top of the conveyor roller at the front end of the vertical conveyor belt (6.4) on both sides.

8. A self-adapting positioning and creasing apparatus for paper towel folding as defined in claim 1, wherein: The cutting mechanism (7.2) includes a frame (7.2.1) fixed to the rear end of the top surface of the base cabinet (7.1), a pair of parallel vertical rollers (7.2.2) with their central shafts rotatably sleeved on both sides of the top and bottom plates of the frame (7.2.1), a gear (7.2.4) fixedly sleeved on the top ends of the central shafts of the two vertical rollers (7.2.2) and meshing with each other, a motor (7.2.5) mounted on the top surface of the frame (7.2.1) and used to drive one of the vertical rollers (7.2.2) to rotate, and a cutter (7.2.3) axially mounted on the outer wall of the vertical roller (7.2.2). The cutter (7.2.3) includes a strip-shaped housing (7.2.3.2), a strip-shaped blade that is radially slidably engaged with the middle of the outer wall of the strip-shaped housing (7.2.3.2) and has a cutting edge on the outer side. 7.2.3.1), a strip (7.2.3.3) fixed to the inside of the strip blade (7.2.3.1) and slidably engaged radially within the inner cavity of the strip housing (7.2.3.2); multiple springs (7.2.3.4) connected between the inner wall of the strip (7.2.3.3) and the inner wall of the cavity of the strip housing (7.2.3.2); and a fixing block (7.2.3.5) integrally formed on the inner side of the top of the strip housing (7.2.3.2). The vertical roller (7.2.2) has a slit (7.2.2.1) on its side wall along the axial direction that is slidably engaged with the strip blade (7.2.3.1). The inner side of the slit (7.2.2.1) has a cylindrical cavity (7.2.2.2) that is slidably engaged with the strip shell (7.2.3.2) along the vertical direction. The top surface of the vertical roller (7.2.2) has a groove (7.2.2.3) that is slidably engaged with the fixing block (7.2.3.5) along the vertical direction.

9. A self-adapting positioning and creasing apparatus for paper towel folding according to claim 1, wherein: The transmission mechanism (7.3) includes a frame two (7.3.1) fixed to the top surface of the base cabinet four (7.1), two vertical rollers two (7.3.2) arranged in pairs and rotatably sleeved at both ends of the central axis on the middle sides of the top and bottom plates of the frame two (7.3.1), a gear nine (7.3.3) fixedly sleeved on the top ends of the central axes of the two vertical rollers two (7.3.2) and meshing with each other, and a motor six (7.3.4) installed on the top surface of the frame two (7.3.1) for driving one of the vertical rollers two (7.3.2) to rotate.

10. A self-adapting positioning and creasing apparatus for paper towel folding according to claim 1, wherein: The folding mechanism (7.4) includes a frame three (7.4.1) fixed to the top surface of the base cabinet four (7.1), and a frame three (7.4.1) disposed on the top surface of the base cabinet four (7.1). 7.4.1) The inner column (7.4.2), the top pressure plate (7.4.3) whose outer end is fixed to the side wall of the column (7.4.2), the telescopic cylinder II (7.4.4) whose piston cylinder is fixed horizontally in the middle of the inner cavity of the frame three (7.4.1) and whose piston rod passes through the middle of the inner side wall of the frame three (7.4.1) and is fixed to the middle of the column (7.4.2), the linear bearing (7.4.5) which is fixedly fitted on the upper and lower sides of the middle of the inner side wall of the frame three (7.4.1), the guide rod (7.4.6) which is slidably fitted on the linear bearing (7.4.5) and whose inner end is fixedly connected to the upper and lower sides of the middle of the column (7.4.2), and the position sensor II (7.4.7) installed on one side of the inner side wall of the frame three (7.4.1).

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