Full-automatic kraft paper packaging system

Abstract

The utility model relates to a full-automatic kraft paper packaging system which is used for automatically measuring breadth, diameter and weight information of a paper roll according to the size of the paper roll entering the packaging system, and selecting a corresponding kraft paper specification for packaging according to the measured paper roll information. The system comprises a plate turnover machine station, a synchronous beam device, a kraft paper packaging station, a hot pressing station, a chain scraper conveyor and a certification printing and pasting station which can work independently and do not interfere with one another, and the plate turnover machine station, the kraft paper packaging station, the hot pressing station and the certification printing and pasting station are connected in series and arranged side by side. And a plurality of paper rolls are simultaneously conveyed to the next station for operation by means of stepping conveying of the synchronous beam device. Compared with a traditional packaging system, the packaging time of each paper roll can be greatly shortened, the processing capacity of the whole packaging system is improved by three times, the packaging speed is improved to 180 rolls per hour from original 60 rolls per hour, and the working efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, specifically to a fully automatic kraft paper packaging system. Background Technology

[0002] Paper rolls produced by paper machines are susceptible to moisture or impact damage during storage or transportation, necessitating kraft paper packaging. Currently, most paper mills in China use imported packaging machines for their kraft paper packaging systems, which are costly to purchase and offer inconvenient after-sales and maintenance services. Domestically produced kraft paper packaging systems are mostly single-station centralized packaging methods, resulting in cumbersome packaging operations and overlapping workstations. This often prevents simultaneous packaging operations, leading to idle parts of the packaging machine system, excessively long packaging times, and limited paper mill production efficiency. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing domestic kraft paper packaging systems, such as overlapping workstations and low packaging capacity, by providing a more rational fully automatic kraft paper packaging system. This system layout allows the flipping machine workstation, synchronous beam device, kraft paper packaging workstation, hot pressing workstation, and certificate printing and pasting workstation to all be in working condition simultaneously, thereby achieving independent and continuous packaging at each workstation of the kraft paper packaging system and greatly improving production efficiency.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] A fully automatic kraft paper packaging system is used to automatically measure the width, diameter, and weight of paper rolls entering the packaging system, and select the corresponding kraft paper specifications for packaging based on the measured paper roll information. The system includes a flipping machine station that can operate independently without interfering with each other, a synchronous beam device, a kraft paper packaging station, a hot pressing station, a chain conveyor, and a certificate printing and pasting station. The flipping machine station, kraft paper packaging station, hot pressing station, and certificate printing and pasting station are arranged in series and side by side. After the operation of each station is completed, multiple paper rolls are simultaneously transported to the next station for operation by the stepping conveyor of the synchronous beam device.

[0006] Furthermore, the flipping machine station is located at the entrance of the packaging system and integrates a flipping device, a centering and correction device, a barcode scanning device, a weighing device, a coding device, and a winding device. It is used to center and correct the paper rolls fed in from the front end, identify barcode information, and collect weight information data.

[0007] Furthermore, the flipping device, driven by a bottom geared motor, swings the crank-connecting rod structure to different angles, thereby controlling the flip plate to achieve the paper receiving position, center position, and paper output position. The centering and correction device is used to correct skewed paper rolls during the packaging system, ensuring the consistency of the center of each paper roll. This device is chain-driven, simultaneously driving the centering clamps on both sides for centering. The barcode scanning device consists of a barcode scanner and related mounting brackets. The barcode scanner has an adjustable recognition angle and is used to scan the barcode affixed to the end of the paper roll and read the paper roll data. The system includes: width and diameter data; a weighing device installed at the bottom of the flipper, consisting of four weighing modules with an accuracy of ≤0.1% and a minimum resolution of 0.5Kg, and equipped with a host computer for collecting paper roll weight information; a coding device and a barcode scanning device sharing the same mounting bracket, used to mark the collected paper roll width, diameter, and weight information on the end face of the paper roll; and a winding device located opposite the paper output position of the flipper, driven by a cylinder to swing the cantilever, assisting the paper roll flipped out of the flipper to stop smoothly on the synchronous beam of the synchronous beam device.

[0008] Furthermore, the flipping machine is equipped with several non-powered rubber-coated rollers to reduce the friction caused by the displacement of the paper roll during centering, ensuring that no scratches or marks are generated on the paper surface during the paper roll centering operation.

[0009] Furthermore, the synchronous beam device runs through the entire packaging system and serves as a bridge connecting the various workstations. The synchronous beam device has a total of 4 workstations and 3 trolleys. The trolleys are pulled by steel wire ropes and the tracks are lifted by hydraulic cylinders, thereby realizing the synchronous transport of paper rolls between the flipping machine workstation, the kraft paper packaging workstation, and the hot pressing workstation.

[0010] Furthermore, the kraft paper packaging station includes an inner sealing robot, an inner sealing placement unit, an online drive bottom roller, a paper feeding device, and a paper unloading device. It is used for packaging kraft paper rolls. Based on the specifications of the paper rolls, it automatically selects the width of the packaging paper and calculates the length of the packaging paper for packaging, and completes the placement of the inner sealing head and the folding of the kraft paper edges.

[0011] Furthermore, the inner sealing robot automatically picks up inner sealing heads from the inner sealing head stack according to the required specifications and places them on the inner sealing head placement unit, realizing automatic transfer between the inner sealing heads and the inner sealing head placement unit. The inner sealing head robot's suction gripper is equipped with a vacuum device and a position detection device, which adjusts the robot's posture by detecting the placement position of the inner sealing heads each time it picks up an inner sealing head, ensuring the reliability of each pick-up. The inner sealing head placement unit receives the inner sealing heads picked up by the inner sealing head robot and places them on both ends of the roll to be wrapped, cooperating to complete the folding and packaging of the paper roll. According to the specifications of different paper rolls, the swing arm driven by the synchronous belt moves to a position close to the end face of the paper roll, and the crank-connecting rod mechanism drives the swing arm to rotate back and forth to place the inner sealing head on the end face of the paper roll. Several vacuum suction cups and air blowing nozzles are provided on the swing arm to ensure the stability of the inner sealing head during the picking and folding process. The online drive bottom roller is located on both sides of the synchronous beam of the kraft paper packaging station, consisting of one driven roller with power and one undriven roller. The surface is knurled and controlled by a variable frequency speed control motor. The paper feeding device consists of two sets of driven paper feeding rollers, three sets of pressure rollers, four sets of pressure plates, a folding arm, and a glue spraying and cutting mechanism. Once the specifications for the paper to be wrapped are confirmed, the paper feeding device automatically selects the appropriate kraft paper size, opens the pressure plates for that paper path, and a cylinder drives the pressure rollers to swing, gently pressing the kraft paper onto the paper feeding rollers. The paper feeding roller motor then feeds the kraft paper out. After the kraft paper is fed out, the glue spraying nozzles at the exit of the glue spraying and cutting mechanism spray glue. The folding arm is powered by a pneumatic... The cylinder drives the paper roll to fall onto the paper roll body for edge folding. After packaging to the set number of layers, the paper cutter of the glue spraying and cutting mechanism cuts the paper. The paper feeding device includes four sets of support frames and guide rollers for placing the packaging paper roll. Each set of support frames has two movable paper holders. One of the movable paper holders is equipped with a tension adjustment device and a self-expanding short shaft. The movable paper holder is driven by a cylinder, and the tension of the packaging material is set according to the working conditions. The self-expanding short shaft is used to ensure that the paper core is tightly attached to the short shaft when the paper roll rotates, avoiding slippage.

[0012] Furthermore, the hot pressing station consists of an outer sealing robot, a pressing device, and a rewinding device. The pressing device consists of a hot pressing plate, a fan, a telescopic cantilever, and a hydraulic kicking machine. It is used to press the outer sealing head onto both ends of the paper roll, so that the adhesive on the outer sealing head is melted and adhered to the ends of the paper roll. At the same time, it flattens the folded paper into shape. The hydraulic kicking machine works in conjunction with the rewinding device to smoothly kick the paper roll from the hot pressing station onto the subsequent chain conveyor.

[0013] Furthermore, the chain conveyor uses a V-shaped chain conveyor, which is driven by a geared motor with frequency conversion, enabling forward and reverse conveying.

[0014] Furthermore, the certificate printing and pasting station consists of a labeling robot, a laser printer, and a spraying device. The robot uses a vacuum gripper to pick up the certificate printed by the laser printer, and then sprays water onto the back of the certificate, which has been pre-applied with water-soluble adhesive, before pasting the certificate onto the designated position on the paper roll, thus completing the printing and pasting of the paper roll certificate.

[0015] The beneficial effects of this utility model are:

[0016] 1. The barcode recognition, paper roll centering and correction function, weighing function, inkjet printing function and flipping function are integrated into one flipping machine station, which eliminates the need for purchasing and installing additional equipment, greatly reduces equipment purchase costs and improves the utilization rate of factory floor space.

[0017] 2. Replacing manual operations such as inner and outer head placement and certificate affixing with robots reduces direct or indirect contact between personnel and machinery, which not only reduces the labor intensity of operators but also improves the safety of the entire system.

[0018] 3. Compared with other traditional packaging systems, the workstations in this packaging system are arranged in series and side by side. Each workstation can operate independently without interference. After each workstation completes its work, the synchronous beam can simultaneously transport three paper rolls to the next workstation for processing. This greatly shortens the packaging time of each paper roll and increases the overall processing capacity of the packaging system by 3 times. The packaging speed has increased from 60 rolls / hour to 180 rolls / hour, significantly improving work efficiency. Attached Figure Description

[0019] Figure 1 This is a plan view of the system layout described in the embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of the flipping machine structure described in the embodiments of this utility model;

[0021] Figure 3 This is a schematic diagram of the winding device structure described in the embodiments of this utility model;

[0022] Figure 4 This is a schematic diagram of the synchronous beam device structure described in the embodiment of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal head-sealing robot structure described in an embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the inner head placement unit structure described in an embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of the online drive bottom roller structure described in the embodiments of this utility model;

[0026] Figure 8 This is a schematic diagram of the paper feeding device described in an embodiment of the present utility model;

[0027] Figure 9 This is a schematic diagram of the paper feeding device described in an embodiment of the present utility model;

[0028] Figure 10 This is a schematic diagram of the pressing device structure described in the embodiments of this utility model;

[0029] Figure 11 This is a schematic diagram of the chain conveyor structure described in the embodiments of this utility model;

[0030] Figure 12 This is a schematic diagram of the certificate printing and pasting station described in this embodiment of the utility model;

[0031] In the diagram: a- Flipping machine station; b- Kraft paper packaging station; c- Hot pressing station; d- Certificate printing and pasting station; 1- Flipping machine; 2- Splicing device; 3- Synchronous beam device; 4- Inner sealing robot; 5- Inner sealing placement unit; 6- Online drive bottom roller; 7- Paper feeding device; 8- Paper unloading device; 9- Outer sealing robot; 10- Pressing device; 11- Chain conveyor; 12- Splicing device; 13- Chain conveyor; 14- Labeling robot; 15-Laser printer; 16-Spraying device; 201-Flip plate; 202-Flip plate motor; 203-Centering clamp; 204-Centering clamp motor; 205-Centering clamp drive chain; 206-Non-powered rubber-coated roller; 207-Barcode scanner; 208-Weighing module; 209-Coding device; 301-Cylinder; 302-Cantilever; 401-Synchronous beam paper feeding station; 402-Synchronous beam trolley; 403-Winding drum device wire rope; 4 04-Hydraulic cylinder; 501-Suction clamp; 502-Vacuum device; 503-Position detection device; 601-Synchronous belt; 602-Swing arm; 603-Crank connecting rod mechanism; 604-Vacuum suction cup; 605-Air nozzle; 701-Powered drive roller; 702-Unpowered drive roller; 703-Drive roller motor; 801-Paper feed roller; 802-Paper pressure roller; 803-Paper pressure device; 804-Folding arm; 805-Glue spraying and paper cutting mechanism; 8 06-Cylinder; 807-Glue Nozzle; 808-Cylinder; 809-Motor; 810-Fan Blade; 811-Paper Cutter; 901-Support Frame; 902-Guide Roller; 903-Movable Paper Holder; 904-Tension Adjustment Device; 905-Self-Expanding Short Shaft; 1001-Hot Press Plate; 1002-Fan; 1003-Cantilever; 1004-Hydraulic Roller; 1101-V-Chain; 1102-Motor; 1201-Vacuum Gripper. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] like Figure 1 As shown, the fully automatic kraft paper packaging system provided by this utility model mainly consists of a flipping machine station a, a synchronous beam device 3, a kraft paper packaging station b, a hot pressing station c, a chain conveyor 11, a chain conveyor 13, and a certificate printing and pasting station d. Its feature is that the stations are arranged in series and side by side, and the equipment at each station can operate independently without interfering with each other. After each station has completed its work, multiple paper rolls can be simultaneously transported to the next station for operation by the stepping conveyor of the synchronous beam device 3.

[0034] The flipping machine station 2 is located at the entrance of the packaging system and integrates a flipping device, a centering and correction device, a barcode scanning device, a weighing device, a coding device, and a roll-connecting device 2. It is used to center and correct the paper rolls fed in by the front-end conveying system, identify barcode information, and collect weight information data.

[0035] The flipping machine 1 integrates a flipping device, a centering and correction device, a barcode scanning device, a weighing device, and a coding device, with the structure as follows: Figure 2 As shown.

[0036] The flipping device is divided into a paper receiving position, a middle position, and a paper output position. It is controlled by the bottom reduction motor 202 driving the crank connecting rod structure to swing to different angles, thereby controlling the flipping of the steel structure flip plate 201.

[0037] The alignment and correction device is used to correct skewed paper rolls during the feeding into the packaging system, ensuring the consistency of the center of each paper roll. This device is driven by a geared motor 204, which simultaneously drives the alignment clamps 203 on both sides via chains 205 for alignment. Furthermore, to reduce friction caused by paper roll displacement during alignment, several non-powered rubber-coated rollers 206 are installed on the surface of the flipping machine, ensuring that no scratches or marks are generated on the paper surface during alignment.

[0038] The barcode scanning device consists of a barcode scanner 207 and related mounting brackets. The scanner's recognition angle is adjustable. This device is used to scan barcodes affixed to the end of paper rolls and read data such as the width and diameter of the paper rolls.

[0039] The weighing device is installed at the bottom of the flipping machine and consists of 4 weighing modules 208 with an accuracy of ≤0.1% and a minimum resolution of 0.5Kg. It is also equipped with a host computer for collecting paper roll weight information.

[0040] The inkjet printer 209 shares the same mounting bracket with the barcode scanner and is used to mark the collected information such as the width, diameter, and weight of the paper roll on the end face of the paper roll.

[0041] The reeling device 2 is located on the opposite side of the paper output position of the flipper. Driven by cylinder 301, the cantilever 302 swings, assisting the paper roll flipped out of the flipper to smoothly stop on the synchronous beam. Its structure is as follows: Figure 3 As shown.

[0042] The synchronous beam device 3 runs through the entire packaging system, serving as a bridge connecting the various workstations. The synchronous beam device has four workstations 401 and three trolleys 402. The trolleys 402 are pulled by a winch device with steel cables 403, and the tracks are lifted by hydraulic cylinders 404, thus achieving synchronous conveying of paper rolls between the flipping machine workstation, the kraft paper packaging workstation, and the heat-sealing workstation. Its structure is as follows: Figure 4 As shown.

[0043] Kraft paper packaging station b is used for packaging kraft paper rolls. It can automatically select the width and calculate the length of the packaging paper according to the specifications of the paper roll, and complete the placement of the inner seal and the folding of the kraft paper edges. This station mainly consists of an inner seal robot 4, an inner seal placement unit 5, an online drive bottom roller 6, a paper feeding device 7, and a paper unloading device 8.

[0044] The inner sealing robot 4 can automatically pick up inner sealing heads from the inner sealing head stack according to the required inner sealing head specifications and place them on the inner sealing head placement unit 5, realizing the automatic transfer function between the inner sealing heads and the inner sealing head placement unit. The inner sealing robot 4's suction gripper 501 is designed with a vacuum device 502 and a position detection device 503. Each time an inner sealing head is picked up, the robot's movement posture can be adjusted by detecting the placement position of the inner sealing head, ensuring the reliability of each pick-up. Its structure is as follows: Figure 5 As shown.

[0045] The inner sealing head placement unit 5 receives the inner sealing heads picked up by the inner sealing head robot and places them on both ends of the paper roll to be wrapped, thus completing the folding and packaging of the paper roll. Depending on the specifications of the paper roll, the synchronous belt 601 drives the swing arm 602 to move close to the end face of the paper roll. The crank-connecting rod mechanism 603 drives the swing arm 602 to rotate back and forth, placing the inner sealing head on the end face of the paper roll. Several vacuum suction cups 604 and air nozzles 605 are provided on the swing arm to ensure the stability of the inner sealing head during the suction and folding process. Its structure is as follows: Figure 6 As shown.

[0046] The online drive bottom roller 6 is located on both sides of the synchronous beam at the kraft paper packaging station. It consists of one powered drive roller 701 and one unpowered drive roller 702. The drive rollers have a knurled surface and are controlled by a frequency converter motor 703. Its structure is as follows: Figure 7 As shown.

[0047] The paper feeding device 7 consists of two sets of driven paper feeding rollers 801, three sets of pressure rollers 802, four sets of pressure plates 803, a folding arm 804, and a glue spraying and cutting mechanism 805. Once the roll specifications are confirmed, the paper feeding device automatically selects the appropriate kraft paper size, opens the pressure plate 803 of that paper path, and a cylinder 806 drives the pressure rollers 802 to swing, gently pressing the kraft paper onto the paper feeding rollers 801. The paper feeding roller motor then drives the kraft paper out. After the kraft paper is out, the glue spray nozzle 807 of the glue spraying and cutting mechanism 805 at the exit sprays glue. The folding arm 804, driven by a cylinder 808, falls onto the paper roll. The reduction motor 809 at the end of the folding arm 804 drives the fan blades 810 to rotate and fold the paper edges. After the set number of layers is reached, the cutter 811 of the glue spraying and cutting mechanism cuts the paper. Its structure is as follows: Figure 8 As shown.

[0048] The paper feeding device 8 includes four sets of support frames 901 and guide rollers 902 for placing the packaging paper roll. Each set of support frames has two movable paper holders 903, one of which is equipped with a tension adjustment device 904 and a self-expanding short shaft 905. The tension of the packaging material can be set according to the working conditions. When the paper roll rotates, the self-expanding short shaft 905 ensures that the paper core is in close contact with the short shaft, preventing slippage. Its structure is as follows: Figure 9 As shown.

[0049] The hot pressing station c mainly consists of an outer sealing robot 9, a pressing device 10, and a coil receiving device 12. The pressing device 10 mainly consists of a hot pressing plate 1001, a blower 1002, a telescopic cantilever 1003, and a hydraulic coil kicker 1004, with the structure as follows: Figure 10 As shown. The outer sealing robot 9 picks up a suitable outer sealing head according to the paper roll specifications and places it on the hot pressing plate. The negative pressure generated by the fan 1002 keeps the outer sealing head adsorbed on the hot pressing plate 1001 for heating and preparation. After the paper roll arrives at the work station, the hot pressing plates 1001 at both ends automatically extend and move towards the middle, pressing the outer sealing head on the hot pressing plate 1001 onto both ends of the paper roll and applying pressure to hold it in place. This causes the adhesive on the outer sealing head to melt and adhere to the ends of the paper roll, while also flattening the folded paper. After the pressing time is reached, the hot pressing plates 1001 on both sides retract. The plate surface temperature can be freely set between 120-180℃, and the most reasonable heating temperature can be selected according to production needs. After the outer sealing head is pressed, the hydraulic kicking machine 1004 works in conjunction with the receiving device 12 to smoothly kick the paper roll from the hot pressing station c onto the subsequent chain conveyor 11.

[0050] Chain conveyors 11 and 13 use V-type chains 1101 for conveying. The V-type chains 1101 are driven by a geared motor 1102 via frequency conversion, allowing for forward and reverse conveying. The structure is as follows: Figure 11 As shown.

[0051] The certificate printing and pasting station d is used to print and paste certificates of conformity on paper rolls. It mainly consists of a labeling robot 14, a laser printer 15, and a spraying device 16. Water-soluble adhesive is pre-applied to the back of the certificate. The labeling robot 14 uses a vacuum gripper 1201 to pick up the certificate printed by the laser printer 15, then sprays water onto the back of the certificate through the spraying device 16, and finally pastes the certificate onto the designated position on the paper roll. The structure is as follows. Figure 12 As shown.

[0052] The working process of this utility model is described below:

[0053] The front-end conveying system transports the paper rolls to be packaged to the flipping machine station a of the kraft paper packaging system.

[0054] At station a of the flipping machine, the paper roll is automatically centered on flipping machine 1, which is equipped with a centering and correction device. The barcode scanning device identifies and reads the barcode information on the paper roll and sends the relevant data to the host computer for comparison to prevent incorrect barcode label affixing. Simultaneously, the weighing device weighs the paper roll and sends this information to the host computer's database. The database stores the relevant data and provides the relevant information required for the inkjet printer and certificate printing to the relevant subsystems when the paper roll arrives at the corresponding functional station. The inkjet printer completes the inkjet printing on the end face of the paper roll based on the information provided by the database. After completing the above processes, flipping machine 1 operates, and with the cooperation of the winding device 2, smoothly stops the paper roll on the synchronous beam device 3.

[0055] The hydraulic cylinder 404 of the synchronous beam device 3 extends to drive the synchronous beam device track to be lifted as a whole. The winch device wire rope 403 pulls the trolley 402 to travel and transport the paper roll to the kraft paper packaging station b, and then it stops automatically. The hydraulic cylinder 404 retracts to drive the synchronous beam device track to fall as a whole. The winch device wire rope 403 pulls the trolley 402 back to its original position.

[0056] At the kraft paper packaging station b, the inner sealing robot 4 sends the inner sealing head of the corresponding size into the inner sealing head placement unit 5. The inner sealing head placement unit 5 places the two inner sealing heads on the two ends of the paper roll. The paper feeding device 7 and the paper placement device 8 work together to apply glue to the packaging paper of the corresponding width and send it under the paper roll. At this time, the folding arm 804 falls, the fan blade 810 starts to rotate and fold, and the online drive bottom roller 6 also starts at the same time, driving the paper roll to rotate for kraft paper packaging. After the number of packaging layers reaches the required number of layers, the paper feeding device 7 and the paper placement device 8 stop, the glue spraying and paper cutting mechanism performs paper cutting and glue spraying, and the online drive bottom roller 6 starts again. After the kraft paper is completely packaged and the folding arm completes the folding of the packaging paper, the kraft paper packaging is completed.

[0057] Synchronous beam device 3 restarts. At this time, roll #2, awaiting packaging, is already in place at flipping machine station a. Conveyed by synchronous beam device 3, the paper roll already packaged in kraft paper and roll #2 awaiting packaging are simultaneously transported to heat pressing station c and kraft paper packaging station b, respectively. Subsequent rolls awaiting packaging, such as roll #3 and roll #4, are transported synchronously via synchronous beam device 3 in this cycle.

[0058] At the hot pressing station c, the outer end cap robot 9 delivers the corresponding size outer end cap to the hot pressing plate 1001 of the pressing device 10. The negative pressure generated by the start of the blower 1002 keeps the outer end cap adsorbed on the hot pressing plate 1001 for heating and preparation. After the paper roll arrives at the station, the hot pressing plates 1001 at both ends automatically extend and move towards the middle, pressing the outer end cap on the hot pressing plate 1001 onto both ends of the paper roll and applying pressure to hold it in place, so that the adhesive on the outer end cap melts and adheres to the ends of the paper roll. At the same time, the folded paper is flattened and shaped. After the pressing time is reached, the hot pressing plates 1001 on both sides retract. After the outer end cap is pressed, the hydraulic kicking machine 1004 works in conjunction with the winding device 12 to smoothly kick the paper roll from the hot pressing station c onto the subsequent chain conveyor 11.

[0059] The paper roll is conveyed to the certificate printing and pasting station d by the coordinated operation of chain conveyor 11 and chain conveyor 13.

[0060] At the certificate printing and pasting station d, the labeling robot 14 picks up the certificate printed by the laser printer 15, sprays water on the back of the certificate through the spray device 16, and finally pastes the certificate on the designated position on the paper roll.

[0061] After completing the above tasks, the paper roll continues to be conveyed and enters the back-end conveying system.

Claims

1. A fully automatic kraft paper packaging system, used to automatically measure the width, diameter, and weight of a paper roll entering the packaging system, and select the corresponding kraft paper specifications for packaging based on the measured paper roll information, characterized in that: The system includes a flipping machine station that can operate independently without interfering with each other, a synchronous beam device, a kraft paper packaging station, a hot pressing station, a chain conveyor, and a certificate printing and pasting station. The flipping machine station, kraft paper packaging station, hot pressing station, and certificate printing and pasting station are arranged in series and side by side. After the work at each station is completed, multiple paper rolls are simultaneously transported to the next station for work by the step-by-step conveying of the synchronous beam device.

2. The fully automatic kraft paper packaging system according to claim 1, characterized in that: The flipping machine station is located at the entrance of the packaging system and integrates a flipping device, a centering and correction device, a barcode scanning device, a weighing device, a coding device, and a winding device. It is used to center and correct the paper rolls fed in from the front end, identify barcode information, and collect weight information data.

3. The fully automated kraft paper packaging system according to claim 2, characterized in that: The flipping device is driven by a bottom geared motor to swing the crank-connecting rod structure to different angles, thereby controlling the flip plate to flip to achieve the paper receiving position, the middle position, and the paper output position; The alignment and correction device is used to correct skewed paper rolls during the packaging system, ensuring the consistency of the center of each paper roll. This device is chain-driven, and the chain simultaneously drives the alignment clamps on both sides for alignment. The barcode scanning device consists of a barcode scanner and related mounting brackets. The barcode scanner has an adjustable recognition angle and is used to scan the barcode affixed to the end of the paper roll and read the width and diameter data of the paper roll. The weighing device is installed at the bottom of the flipper and consists of 4 weighing modules with an accuracy of ≤ 0.1% and a minimum resolution of 0.5Kg. It is equipped with a host computer for collecting the weight information of the paper roll. The inkjet printing device shares the same mounting bracket with the barcode scanning device and is used to mark the collected width, diameter, and weight information of the paper roll on the end face of the paper roll. The reeling device is located on the opposite side of the paper output position of the flipper. The cantilever swings, driven by a cylinder, to help the paper roll flipped out of the flipper to stop smoothly on the synchronous beam of the synchronous beam device.

4. The fully automated kraft paper packaging system according to claim 2, characterized in that: The flipping machine is equipped with several non-powered rubber-coated rollers to reduce the friction caused by the displacement of the paper roll during centering, ensuring that no scratches or marks are generated on the paper surface during the centering operation.

5. The fully automated kraft paper packaging system according to claim 1, characterized in that: The synchronous beam device runs through the entire packaging system and serves as a bridge connecting various workstations. The synchronous beam device has a total of 4 workstations and 3 trolleys. The trolleys are pulled by steel wire ropes and the tracks are lifted by hydraulic cylinders, thereby realizing the synchronous transport of paper rolls between the flipping machine workstation, the kraft paper packaging workstation, and the hot pressing workstation.

6. The fully automated kraft paper packaging system according to claim 1, characterized in that: The kraft paper packaging station includes an inner sealing robot, an inner sealing placement unit, an online drive bottom roller, a paper feeding device, and a paper unloading device. It is used for packaging kraft paper rolls. Based on the specifications of the paper roll, it automatically selects the width of the packaging paper and calculates the length of the packaging paper for packaging, and completes the placement of the inner sealing head and the folding of the kraft paper edges.

7. The fully automated kraft paper packaging system according to claim 6, characterized in that: The inner sealing robot automatically picks up inner sealing heads from the inner sealing head stack according to the required specifications and places them on the inner sealing head placement unit, realizing automatic transfer between the inner sealing heads and the placement unit. The robot's suction gripper is equipped with a vacuum device and a position detection device to adjust the robot's posture by detecting the placement position of the inner sealing heads each time it picks up an inner sealing head, ensuring the reliability of each pick. The inner sealing head placement unit receives the inner sealing heads picked up by the robot and places them on both ends of the roll to be wrapped, assisting in folding and packaging the paper roll. Depending on the specifications of different paper rolls, a synchronous belt drives a swing arm to move close to the end face of the paper roll, and a crank-connecting rod mechanism drives the swing arm to rotate back and forth to place the inner sealing head on the end face of the paper roll. Several vacuum cups and air nozzles are installed on the swing arm to ensure the stability of the inner sealing head during the picking and folding process. The online drive bottom rollers are located on both sides of the synchronous beam at the kraft paper packaging station, consisting of one powered drive roller and one unpowered drive roller. The drive roller surface has a knurled finish. The paper feeding device is controlled by a variable frequency speed control motor. It consists of two sets of driven paper feeding rollers, three sets of pressure rollers, four sets of pressure devices, a folding arm, and a glue spraying and cutting mechanism. Once the specifications of the paper to be wrapped are confirmed, the paper feeding device automatically selects the appropriate kraft paper size, opens the pressure device on the paper path, and a cylinder drives the pressure rollers to swing, gently pressing the kraft paper onto the paper feeding rollers. The paper feeding roller motor then drives the kraft paper out. After the kraft paper is out, the glue spraying nozzle at the exit of the glue spraying and cutting mechanism sprays glue. The folding arm is then powered by a pneumatic... The cylinder drives the paper roll to fall onto the paper roll body for edge folding. After packaging to the set number of layers, the paper cutter of the glue spraying and cutting mechanism cuts the paper. The paper feeding device includes four sets of support frames and guide rollers for placing the packaging paper roll. Each set of support frames has two movable paper holders. One of the movable paper holders is equipped with a tension adjustment device and a self-expanding short shaft. The movable paper holder is driven by a cylinder, and the tension of the packaging material is set according to the working conditions. The self-expanding short shaft is used to ensure that the paper core is tightly attached to the short shaft when the paper roll rotates, avoiding slippage.

8. The fully automated kraft paper packaging system according to claim 1, characterized in that: The hot pressing station consists of an outer sealing robot, a pressing device, and a rewinding device. The pressing device consists of a hot pressing plate, a fan, a telescopic cantilever, and a hydraulic kicking machine. It is used to press the outer sealing head onto both ends of the paper roll, so that the adhesive on the outer sealing head is melted and adhered to the ends of the paper roll. At the same time, it flattens the folded paper. The hydraulic kicking machine works in conjunction with the rewinding device to smoothly kick the paper roll from the hot pressing station onto the subsequent chain conveyor.

9. The fully automated kraft paper packaging system according to claim 1, characterized in that: The chain conveyor uses a V-shaped chain for conveying, which is driven by a geared motor with frequency conversion and can convey in both directions.

10. The fully automated kraft paper packaging system according to claim 1, characterized in that: The certificate printing and pasting station consists of a labeling robot, a laser printer, and a spraying device. It is used to pick up the certificate printed by the laser printer through a vacuum gripper, and then spray water on the back of the certificate which has been pre-applied with water-soluble adhesive before pasting the certificate onto the designated position on the paper roll, thus completing the printing and pasting of the paper roll certificate.

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