Automatic gluing equipment and method for inner wall of paper tube

Abstract

The invention relates to the technical field of paper tube automatic gluing, and discloses paper tube inner wall automatic gluing equipment and method.The paper tube inner wall automatic gluing equipment comprises a base and a sliding block installed in the base in a sliding mode, a threaded rod is arranged on the inner side of the sliding block in a penetrating mode, a stabilizing frame is fixedly installed above the sliding block, a glue spraying pipe is arranged on the inner side of the stabilizing frame in a penetrating mode, and a middle shaft is rotationally arranged on the inner side of the glue spraying pipe; the stabilizing part is arranged on the outer side of the glue spraying pipe and one side of the first sleeve so as to ensure the glue spraying stability; the stabilizing part comprises an extending piece and a clamping piece; the extending piece is arranged on the outer side of the glue spraying pipe. The dredging strip is inserted into the spraying hole of the rotary spraying head in a default state, during glue spraying treatment, a glue spraying solution impacts upwards to make contact with the center position of a pulling plate, the pulling plate moves upwards and deforms, the pulling plate moves upwards to scrape the inner wall of a paper tube, blocked impurities are pushed out of the spraying hole, and the dredging function is achieved; and the next glue spraying use is facilitated.

Description

Technical Field

[0001] This invention relates to the field of automatic glue coating technology for paper tubes, and specifically to an automatic glue coating device and method for the inner wall of a paper tube. Background Technology

[0002] Paper tubes are tubular objects made from paper. To enhance structural stability or sealing, they are usually coated with adhesive. Currently, this is mainly done through contact and non-contact coating methods. Contact coating involves the adhesive applicator directly contacting the inner wall of the paper tube to transfer the adhesive, relying on mechanical bonding to achieve coating. This method is suitable for medium to high viscosity adhesives. Non-contact coating methods apply the adhesive through pressure, centrifugal force, or atomization. This method is suitable for low to medium viscosity adhesives. Currently, although non-contact rotary nozzle spraying can complete the coating of the inner wall, the following problems still exist in actual operation.

[0003] For example, in actual operation, frequent spraying with rotating nozzles can cause residual glue and impurities to harden at the nozzle holes, leading to uneven atomization and clogging. This is not conducive to uniform spraying and results in some areas having too much glue and others having too little, affecting the quality and efficiency of glue coating on the inner wall of the paper tube. Summary of the Invention

[0004] This invention provides an automatic glue coating device and method for the inner wall of a paper tube. The device utilizes the impact force of the glue spraying process in conjunction with the upward pushing of the unblocking strip to scrape off and collect the blockage on the inner wall of the paper tube. At the same time, it squeezes out the water for lubrication, reduces drying, and improves the quality and efficiency of glue coating on the inner wall of the paper tube.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: In a first aspect, an automatic glue-coating device and method for the inner wall of a paper tube includes a base and a slider slidably installed inside the base. A screw is inserted through the inner side of the slider, a stabilizing frame is fixedly installed above the slider, a glue-spraying tube is inserted through the inner side of the stabilizing frame, a central shaft is rotatably installed inside the glue-spraying tube, and a rotating nozzle is fixedly installed at the top of the central shaft. The device also includes: The stabilizing part is located on the outside of the glue spray tube and on one side of the sleeve to ensure the stability of glue spraying; The stabilizing part includes an extension member and a locking member. The extension member is located on the outside of the glue spray tube and is connected to the locking member. The locking member is located on one side of the sleeve. The anti-clogging section is located on the outside of the spray tube and on the outside of the rotating nozzle to improve the uniformity of spraying. The anti-clogging part includes a unclogging component and a lubricating component. The unclogging component is located on the outside of the spray tube and is connected to the lubricating component. The lubricating component is located on the outside of the central axis. The collection section is located on the outside of the unclogging component and on the side of the lubricating component to collect any residue from the unclogging component. The collection section includes a cleaning component and a dispensing component. The cleaning component is located outside the unblocking component and is connected to the dispensing component. The dispensing component is located on one side of the moisturizing component.

[0006] Furthermore, the extension element includes: Sleeve 1 is located on the outside of the glue spray tube and can slide along the outside of the glue spray tube; Multiple swing blocks are fixedly installed on the outer side of a sleeve. Multiple guide plates are rotatably positioned above the swing block.

[0007] Furthermore, the locking components also include: Thin support bars are snapped together inside the guide plate; Sleeve 2 is fixedly installed on the outside of the glue spray tube and located at one end of the thin support strip; A mounting ring is placed on the outside of the adhesive spray tube; A flexible pin is located at the end of the thin support bar near the guide plate.

[0008] Furthermore, the unblocking components include: The guide bar is located on one side of the mounting ring; An arc-shaped rod is positioned at one end of the guide bar; The unblocking strip is installed through the inside of the curved bar; The ring is located at one end of the guide bar and is connected to the arc-shaped rod.

[0009] Furthermore, unblocking components also include: The dispensing cap is located on the outside of the drain strip; The slits, which are multiple in number, are located on one side of the dispensing cover; The pull plate is located at the bottom of the slitting section; A tension spring is located inside the curved rod; The pressure block is located below the tension spring and is fixedly connected to the arc-shaped rod.

[0010] Furthermore, the moisturizing components include: An inclined plate is set on the outside of the arc-shaped rod and connected to one end of the glue spray tube; A rubber bladder is located inside the inclined plate; The shunt tube is fixedly installed below the rubber bladder; The filling head is fixedly installed above the rubber bladder.

[0011] Furthermore, the cleaning components include: The wall cleaning cylinder is located below the inclined plate; The connecting ring is located on the inner wall of the cleaning cylinder.

[0012] Furthermore, the cleaning components include: The drive block is located on the outside of the connecting ring; The cotton wiping plate is fixedly installed on the inner wall of the drive block.

[0013] Furthermore, the separating components include: The glue discharge groove is located inside the inclined guide plate; Storage racks are located below the inclined plate; Furthermore, the separating components also include: An inclined guide plate is installed above the storage rack; The through slot is located on one side of the storage rack; The diameter of the through-slot is smaller than that of the wall-cleaning cylinder; Method of using the automatic glue coating equipment for the inner wall of the paper tube as described above: The staff first placed the paper tube on one side of the stabilizing frame and fixed it. Then, they started the screw and used the screw thread to push the slider along the inner groove of the base towards the inner wall of the paper tube. The slider drove the stabilizing frame, the glue spraying tube, and the rotating nozzle into the inner wall of the paper tube to prepare for the glue spraying work. Add an appropriate amount of glue to one side of the glue spray tube, and then use the power source of the pump to provide pressure to deliver the glue stored inside the glue spray tube to the rotating nozzle at the top. The rotating nozzle facilitates the glue spraying treatment on the inner wall of the paper tube. Adjust the internal balance of the support, adjust the height of the thin support strip and the height of the guide plate. Once they are appropriate, fix the thin support strip to the guide plate with the elastic pin to ensure that it does not loosen when moving and spraying at the same time. Using the impact force of the glue spraying, the unclogging strip that was originally inside the nozzle of the rotating nozzle is flushed away. The pull plate moves upward and retracts inside the arc rod. During the movement, it scrapes the inner wall of the paper tube. At the same time, the unclogging strip is squeezed against the rubber bladder, and the rubber bladder is squeezed out of the rubber bladder. The solution is dripped into the area around the nozzle through the diversion tube to ensure that the area around the nozzle is wet and clean. Finally, the dust on the outside of the pull plate is rubbed against the inner wall of the cleaning cylinder by moving it upwards, thereby cleaning the residual glue solution on the outside of the pull plate.

[0014] The above-described solution of the present invention has at least the following beneficial effects: The adhesive solution is sprayed upwards and contacts the center of the pull plate. The pull plate moves upwards and deforms, scraping against the inner wall of the paper tube and pushing out the clogging impurities from the spray nozzle. The pull plate, together with the slitting and dispensing cap, changes from a flat state to a conical shape. As the unclogging strip moves, it gets stuck on the lower surface of the arc-shaped rod to prevent it from taking up more space. In this process, it has the functions of unclogging blockages, automatic storage, and reducing space occupation, making it convenient for the next adhesive spraying. Attached Figure Description

[0015] The invention will now be further described in conjunction with the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a planar transformer provided in an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the combination of the pin, sleeve one, and sleeve two provided in an embodiment of the present invention; Figure 3 An exploded perspective view of the assembly of the mounting ring, the spray tube, and the arc rod provided in an embodiment of the present invention; Figure 4 This is a schematic diagram showing the internal unfolding of the central shaft, arc rod, and guide bar provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the combined structure of the drain cleaning strip and the dispensing cap provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the combined structure of the tension spring and pressure block provided in an embodiment of the present invention; Figure 7 This is provided by the embodiments of the present invention. Figure 3 Enlarged schematic diagram of a local structure at point A; Figure 8 This is a schematic diagram of the combination structure of the inclined plate and the rubber bladder provided in an embodiment of the present invention; Figure 9 This is a bottom view schematic diagram of the combined structure of the inclined guide plate, glue discharge groove, and storage rack provided in an embodiment of the present invention.

[0017] Figure 10 This is provided by the embodiments of the present invention. Figure 8 Enlarged schematic diagram of the local structure at point C Figure 11 This is an exploded view of the combined structure of sleeve 1, guide plate, thin support strip and central shaft provided in the embodiment of the present invention.

[0018] In the diagram: 1. Base; 2. Slider; 3. Screw; 4. Spray tube; 5. Stabilizer; 6. Sleeve 1; 7. Guide plate; 8. Thin support bar; 9. Sleeve 2; 10. Mounting ring; 11. Central shaft; 12. Rotating nozzle; 13. Ring body; 14. Guide bar; 15. Arc rod; 16. Unclogging bar; 17. Dispensing cap; 18. Segment; 19. Pull plate; 20. Tension spring; 21. Pressure block; 22. Inclined plate; 23. Filling head; 24. Rubber bladder; 25. Diverter pipe; 26. Storage rack; 27. Through slot; 28. Cleaning cylinder; 29. ​​Connecting ring; 30. Drive block; 31. Cotton wiping plate; 32. Pin; 33. Swing block; 34. Dispensing groove; 35. Inclined guide plate. Detailed Implementation

[0019] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0020] like Figures 1 to 11 As shown, an automatic glue coating device and method for the inner wall of a paper tube includes a base 1 and a slider 2 slidably installed inside the base 1. A screw 3 is provided through the inner side of the slider 2. A stabilizing frame 5 is fixedly installed above the slider 2. A glue spraying pipe 4 is provided through the inner side of the stabilizing frame 5. A central shaft 11 is rotatably arranged inside the glue spraying pipe 4. A rotating nozzle 12 is fixedly installed at the top of the central shaft 11. The device also includes: The stabilizing part is located on the outside of the glue spray tube 4 and on one side of the sleeve 6 to ensure the stability of glue spraying; The stabilizing part includes an extension member and a locking member. The extension member is located on the outside of the glue spray tube 4 and is connected to the locking member. The locking member is located on one side of the sleeve 6. The anti-clogging part is located on the outside of the spray tube 4 and on the outside of the rotating nozzle 12 to improve the uniformity of spraying. The anti-blocking part includes a unclogging component and a lubricating component. The unclogging component is located on the outside of the spray pipe 4 and is connected to the lubricating component. The lubricating component is located on the outside of the central shaft 11. The collection section is located on the outside of the unclogging component and on the side of the lubricating component to collect any residue from the unclogging component. The collection section includes a cleaning component and a dispensing component. The cleaning component is located outside the unblocking component and is connected to the dispensing component. The dispensing component is located on one side of the moisturizing component.

[0021] Specifically, the spray tube 4 passes through the stabilizing frame 5, sleeve 6, sleeve 9, and mounting ring 10; the spray tube 4 is fixedly connected to sleeve 9; the spray tube 4 passes through sleeve 6, sleeve 9, and mounting ring 10; the inner wall of the base 1 has a groove adapted to the slider 2; the screw 3 is threadedly driven to the slider 2, and one end of the screw 3 is equipped with a motor and connected to the motor output end; the stabilizing frame 5 supports the spray tube 4, which is beneficial for the balance of spraying during travel; one end of the spray tube 4 is connected to the pump body; the interior of the central shaft 11 is a cavity, which communicates with the spray hole of the rotating nozzle 12; the central shaft 11 can rotate in conjunction with the pump body or air pressure, which is to link the rotation of the rotating nozzle 12 to form a uniform spray at multiple angles; this equipment is suitable for low to medium viscosity adhesives; In practical application, the operator first starts the motor to drive the screw 3. The screw 3 pushes the slider 2 along the inner groove of the base 1 towards the inner wall of the paper tube through the thread action. The slider 2 drives the stabilizing frame 5 to move. The stabilizing frame 5 moves together with the glue spraying tube 4. The glue spraying tube 4 enters the inner wall of the paper tube through the central shaft 11 and the rotating nozzle 12. Then, by adding an appropriate amount of glue from one side of the glue spraying tube 4, and with the power source of the pump providing pressure, the glue stored inside the glue spraying tube 4 is delivered to the rotating nozzle 12 at the top. The glue is evenly applied from the spray hole by pressure, centrifugal force or atomization, thereby completing the spraying of the inner wall of the paper tube and improving the structural stability and sealing of the inner wall of the paper tube.

[0022] like Figures 1 to 3 As shown, the extension member includes: Sleeve 6 is slidably positioned on the outside of the glue spray tube 4; Multiple swing blocks 33 are fixedly installed on the outside of sleeve 6; The guide plate 7, which has multiple components, is rotatably positioned above the swing block 33.

[0023] The card slot components also include: The thin support bar 8 is snapped onto the inside of the guide plate 7; Sleeve 2 9 is fixedly installed on the outside of the glue spray tube 4 and located at one end of the thin support strip 8; The mounting ring 10 is positioned on the outside of the adhesive spray tube 4; The flexible pin 32 is located at one end of the thin support bar 8 near the guide plate 7.

[0024] Specifically, the guide plate 7 has multiple limiting grooves that are adapted to the elastic pins 32; the sleeve 2 9 can support the height of the guide plate 7, so that the guide plate can be inserted into the inner wall of the paper tube in a timely manner; a slide is provided on the side of the guide plate 7 that contacts the thin support bar 8; and a roller is provided at the top of the guide plate 7 to prevent scratches during movement. In practical application, due to the different inner diameters of the paper tubes, the inner wall of the paper tube needs to be supported before spraying the adhesive solution to prevent the paper tube from becoming unbalanced and causing poor adhesive spraying effect and improve versatility. First, the sleeve 6 is put on the outside of the adhesive spraying tube 4. According to the inner diameter of the paper tube, the guide plate 7 is adjusted upward, and then the height of the thin support 8 is adjusted. After both are adjusted, the thin support 8 moves along the slide below the guide plate 7. When the support height is appropriate with the height of the inner wall of the paper tube, the thin support 8 drives the elastic pin 32 to slide. The elastic pin 32 slides along the side of the guide plate 7 and gradually falls into the limiting groove when it encounters it, thereby completing the internal fixation of the guide plate 7.

[0025] like Figures 3 to 4 As shown, the unblocking component includes: Guide bar 14 is positioned on one side of the mounting ring 10; An arc-shaped rod 15 is disposed at one end of the guide bar 14; The unblocking strip 16 is installed through the inner side of the arc-shaped rod 15; The ring 13 is disposed at one end of the guide bar 14 and is connected to the arc-shaped rod 15; Dispensing cap 17 is located on the outside of drain strip 16; The slits 18 are multiple and are rotatably disposed on one side of the dispensing cover 17; Pull plate 19 is located at the bottom end of the slit 18; The tension spring 20 is disposed inside the arc-shaped rod 15; Pressure block 21 is located below tension spring 20 and is fixedly connected to arc rod 15.

[0026] Specifically, the guide strip 14 is used to support the ring body 13 to prevent the arc rod 15 from swaying, so as not to affect the unblocking work; the installation of the mounting ring 10 and the ring body 13 is used to balance the arc rod 15, to prevent one end of the arc rod 15 from drooping due to gravity after long-term use, and to avoid obstructing the spraying of glue; the unblocking strip 16 facilitates the repositioning of the arc rod 15, and the arc rod 15 has a condition inside that is compatible with the unblocking strip 16; In this embodiment, the nozzle of the rotating nozzle 12 is often in contact with air and contains impurities or solidified residues inside. When treatment is required, the sprayed adhesive solution impacts upward and contacts the center of the pull plate 19. The pull plate 19 moves upward and deforms. As the unblocking strip 16 moves, it remains on the lower surface of the arc-shaped rod 15. As the pull plate 19 moves upward and scrapes against the inner wall of the paper tube, it pushes out the blocked impurities from the nozzle, thus unblocking the nozzle and facilitating the next use of the adhesive. Simultaneously, when the pull plate 19 is deformed by the impact, the center of the pull plate 19 will press the unclogging strip 16 upward and move together. The tension spring 20 is gradually compressed at the pressure block 21. The movement of the unclogging strip 16 drives the dispensing cover 17 to move together. The dispensing cover 17 exerts upward force and rotates when the strip 18 is pulled. The strip 18 moves closer to the unclogging strip 16 and shrinks. Through the combined action of the strip 18, the dispensing cover 17, and the unclogging strip 16, the center of the pull plate 19 protrudes upward and becomes sharper. The pull plate 19 as a whole deforms from a flat position into a cone shape until it shrinks to one end below the arc rod 15. After shrinking below the arc rod 15, it moves out of the spraying range of the rotating nozzle 12 to avoid interference. like Figures 7 to 8 As shown, the lubricating component includes: Inclined plate 22 is set outside the arc-shaped rod 15 and connected to one end of the glue spray tube 4; Rubber bladder 24 is disposed inside inclined plate 22; The diversion tube 25 is fixedly installed below the rubber bladder 24; The filling head 23 is fixedly installed above the rubber bladder 24.

[0027] Specifically, the inclined plate 22 allows the liquid from the rubber bladder 24 to flow down more quickly, preventing residue from remaining during dripping; the rubber bladder 24 contains alcohol to lubricate the spray nozzle of the rotating nozzle 12, facilitating the rinsing of the glue delivery line; the diverter 25 facilitates the timely removal of alcohol; the filling head 23 facilitates timely filling; the rubber bladder 24 has an irregular shape and extends through the inner wall of the inclined plate 22 next to the arc-shaped rod 15. In practical applications, although the blockage is cleared, the area around the nozzle is prone to dryness in hot weather, which is not conducive to uniform subsequent glue application. Therefore, when it needs to be moistened, unscrew the filling head 23 and add alcohol or a special cleaning agent solution. When the unblocking strip 16 moves upward, it will squeeze against the rubber bladder 24, and the rubber bladder 24 will be squeezed out of the solution, which will drip into the area around the nozzle through the diverter tube 25 to ensure that the area around the nozzle is moistened and clean.

[0028] like Figures 9 to 10 As shown, the cleaning components include: The wall cleaning cylinder 28 is located below the inclined plate 22; The connecting ring 29 is located on the inner wall of the cleaning cylinder 28.

[0029] The drive block 30 is located on the outside of the connecting ring 29; The cotton wiping plate 31 is fixedly installed on the inner wall of the drive block 30.

[0030] Separating components include: The glue discharge groove 34 is set in the inner cavity of the inclined guide plate 35; Storage rack 26 is located below inclined plate 22; The diameter of the through slot 27 is smaller than that of the wall cleaning cylinder 28; An inclined guide plate 35 is positioned above the storage rack 26; The through slot 27 is located on one side of the storage rack 26; Specifically, the wall cleaning cylinder 28 is used to clean the impacted part of the pull plate 19 on the outside to prevent residue from causing injury to personnel; the through slot 27 facilitates the passage of the deformed pull plate 19; the cotton wiping plate 31 is used to wipe the dust on the outside of the pull plate 19; and the glue discharge groove 34 facilitates the guidance of blockages and impurities after scraping. In practical application, the pull plate 19 moves upward and enters the cleaning cylinder 28. The cotton wiping plate 31 wipes the outside of the pull plate 19, thereby cleaning the residual glue solution on the outside of the pull plate 19 and improving the cleanliness. The connecting ring 29 is used to connect multiple drive blocks 30 together, so that multiple drive blocks 30 can wipe multiple outer surfaces of the pull plate 19. When the pull plate 19 comes into contact with the cotton wiping plate 31, the wiping strip of the cotton wiping plate 31 swings. The drive blocks 30 and the connecting ring 29 are used to stabilize and prevent tangling. The blockages wiped off and the residual adhesive generated by rinsing gradually fall down and enter the recessed adhesive discharge groove 34. Guided by the adhesive discharge groove 34, it is finally recycled into the storage rack 26 to ensure the quality and effect of processing.

[0031] Working principle: When the equipment is started, the operator powers on the motor connected to one end of the screw 3, which drives the screw 3 to rotate. Because the screw 3 and slider 2 are driven by a threaded connection, and the slider 2 is slidably installed in a groove on the inner wall of the base 1, the rotation of the screw 3, through the threaded action, causes the slider 2 to move along the inner groove of the base 1 towards the inner wall of the paper tube. The stabilizing frame 5, fixedly installed above the slider 2, moves along with the slider 2, thereby moving the glue spray tube 4 that passes through the stabilizing frame 5. The glue spray tube 4 then drives the central shaft 11 and the rotating nozzle 12 at the top to enter the inner wall of the paper tube, completing the pre-glue positioning.

[0032] An external pump presses the adhesive into the cavity of the central shaft 11 through the spray tube 4. The adhesive reaches the rotating nozzle 12, and the central shaft 11 rotates under pressure or centrifugal force, driving the rotating nozzle 12 to spray at multiple angles to form a uniform coating. To accommodate paper tubes of different inner diameters and ensure adhesive spraying stability, the stabilizing mechanism needs to be adjusted first. The stabilizing mechanism, consisting of sleeve 1 (6), swing block 33, guide plate 7, and locking component thin support strip 8, sleeve 2 (9), mounting ring 10, and elastic pin 32, works in concert. Sleeve 6 is fitted onto the outside of the glue spray tube 4. The staff adjusts the height of the guide plate 7 according to the inner diameter of the paper tube. The roller at the top of the guide plate 7 can prevent scratches from being caused to the inner wall of the paper tube during movement. At the same time, adjust the height of the thin support bar 8. The thin support bar 8 moves along the slide below the guide plate 7. When the support height matches the height of the inner wall of the paper tube, the thin support bar 8 drives the elastic pin 32 to slide. The elastic pin 32 slides along the side of the guide plate 7 and falls into the preset limiting groove, thus completing the fixation of the guide plate 7. Sleeve 2 9 supports the height of guide plate 7, while the stabilizing frame 5 provides overall support for spray tube 4, together ensuring balance and stability during the spraying process. One end of the glue spray tube 4 is connected to the pump body. When the rotating nozzle 12 enters the inner wall of the paper tube, the pump body provides pressure to deliver the glue liquid in the glue spray tube 4, which is suitable for low to medium viscosity glue, to the central shaft 11. The interior of the central shaft 11 is a cavity that communicates with the spray holes of the rotating nozzle 12. Then, through pressure, centrifugal force, or atomization, the rotating nozzle 12 and the central shaft 11, in conjunction with the pump body or air pressure, generate rotation, driving the rotating nozzle 12 to spray at multiple angles, so that the glue liquid is evenly coated on the inner wall of the paper tube from the spray holes. During this process, the anti-clogging unit operates simultaneously to prevent nozzle blockage and improve uniformity. Its components—guide bar 14, arc-shaped rod 15, unblocking strip 16, ring 13, dispensing cap 17, slits 18, pull plate 19, tension spring 20, pressure block 21 and tilting plate 22, rubber bladder 24—compress the rubber bladder 24 as the unblocking strip 16 moves upwards, releasing alcohol solution which drips through the distributor 25 to the area around the nozzle, preventing adhesive residue from drying. The distributor 25 and dispensing head 23 work together to cause the adhesive to impact the pull plate 19, deforming it upwards into a cone shape, pushing the unblocking strip 16 upwards, and compressing the tension spring 20. The unblocking strip 16 detaches from the nozzle, and the slits 18 retract with the dispensing cap 17 to avoid interfering with the adhesive application.

[0033] Before applying the adhesive, the unblocking strip 16 is inserted into the nozzle of the rotating nozzle 12 by default. When applying the adhesive, the adhesive liquid impacts the center of the pull plate 19 upwards, causing the pull plate 19 to move upwards and deform. As the pulling plate 19 moves upward, it scrapes against the inner wall of the paper tube, pushing out the blockages and impurities in the nozzles to clear the blockage. At the same time, the pulling plate 19 squeezes the unblocking strip 16 upward, causing the tension spring 20 to be gradually compressed at the pressure block 21. The upward movement of the unblocking strip 16 causes the dispensing cap 17 to move. The dispensing cap 17 pulls the strip 18 to rotate, causing the strip 18 to move closer to the unblocking strip 16 and contract. This causes the pulling plate 19 to change from a flat position to a cone shape, eventually contracting below the arc rod 15 and moving out of the spraying range of the rotating nozzle 12 to avoid interfering with the spraying. Meanwhile, a rubber bladder 24 is provided inside the inclined plate 22 on the outer side of the arc-shaped rod 15. The rubber bladder 24 is filled with alcohol or a special cleaning agent. When the unblocking strip 16 moves upward, it squeezes the rubber bladder 24, and the liquid inside the rubber bladder 24 drips into the area around the spray nozzle of the rotating nozzle 12 through the diverter pipe 25, keeping the spray nozzle moist, preventing the adhesive from hardening and clogging, and further improving the uniformity of spraying. In addition, the guide strip 14 supports the ring body 13 and places the ring 10 and the ring body 13 to balance the arc-shaped rod 15, preventing it from drooping and obstructing the adhesive spraying due to gravity. The residual adhesive on the unclogging parts is collected through the coordinated operation of the cleaning cylinder 28, connecting ring 29, driving block 30, cotton wiping plate 31, adhesive discharge groove 34, storage rack 26, inclined guide plate 35, and through groove 27. Pull plate 19 moves upward into cleaning cylinder 28, and cotton wiping plate 31 wipes away residual adhesive on its surface.

[0034] The drive block 30 and the connecting ring 29 ensure that the cotton wiping plate 31 is in uniform contact. Impurities fall into the storage rack 26 through the glue discharge groove 34. During the upward movement of the pull plate 19, it will enter the interior of the wall cleaning cylinder 28. The drive block 30 on the inner wall of the wall cleaning cylinder 28 is connected through the connecting ring 29, which drives the cotton wiping plate 31 to contact the outside of the pull plate 19. The cotton wiping plate 31 swings to wipe away the glue solution remaining on the outside of the pull plate 19. After the adhesive spraying is completed, the pump pressure decreases, the tension spring 20 rebounds, and the unblocking strip 16 is reinserted into the spray nozzle to prevent blockage.

[0035] Pull plate 19 back to its flat position, and rubber bladder 24 stops releasing alcohol; The wiped-off blockages and residual adhesive from rinsing fall downwards and enter the recessed adhesive discharge groove 34 above the inclined guide plate 35. The adhesive residue after wiping is collected along the inclined guide plate 35 through the through groove 27 to the storage rack 26 for centralized cleaning. Guided by the adhesive discharge groove 34, it finally flows into the storage rack 26. The diameter of the through groove 27 is smaller than that of the wall cleaning cylinder 28, which facilitates the passage of the pull plate 19 and realizes the recycling of residual adhesive, ensuring processing quality and equipment cleanliness. The above anti-clogging technology can significantly reduce the clogging rate and is suitable for low to medium viscosity adhesives.

[0036] In summary, this equipment efficiently completes the coating process on the inner wall of the paper tube through a continuous process of startup positioning, stabilization adjustment, glue spraying to prevent clogging, and residue collection, significantly improving the structural stability and sealing of the inner wall of the paper tube.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic glue coating device for the inner wall of a paper tube, comprising a base (1) and a slider (2) slidably mounted inside the base (1), wherein a screw (3) is provided through the inner side of the slider (2), a stabilizing frame (5) is fixedly mounted above the slider (2), a glue spraying pipe (4) is provided through the inner side of the stabilizing frame (5), a central shaft (11) is rotatably mounted inside the glue spraying pipe (4), and a rotating nozzle (12) is fixedly mounted at the top of the central shaft (11), characterized in that, Also includes: The stabilizing part is set on the outside of the glue spray tube (4) and on one side of the sleeve (6) to ensure the stability of glue spraying; The stabilizing part includes an extension member and a locking member. The extension member is disposed on the outside of the spray tube (4). The extension member is connected to the locking member. The locking member is disposed on one side of the sleeve (6). The anti-clogging part is located outside the spray tube (4) and outside the rotating nozzle (12) to improve the uniformity of spraying; The anti-blocking part includes a unclogging component and a lubricating component. The unclogging component is located outside the glue spray pipe (4). The unclogging component is connected to the lubricating component. The lubricating component is located outside the central shaft (11). The collection section is located on the outside of the unclogging component and on the side of the lubricating component to collect any residue from the unclogging component. The collection section includes a cleaning component and a dispensing component. The cleaning component is located outside the unblocking component and is connected to the dispensing component. The dispensing component is located on one side of the moisturizing component.

2. The automatic glue-coating device for the inner wall of a paper tube according to claim 1, characterized in that: The extension member includes: Sleeve 1 (6) is slidably set on the outside of the glue spray tube (4); Multiple swing blocks (33) are fixedly installed on the outside of sleeve one (6); The guide plate (7) has multiple plates and is rotatably positioned above the swing block (33).

3. The automatic glue-coating device for the inner wall of a paper tube according to claim 2, characterized in that: The locking component also includes: The thin support bar (8) is snapped into the inside of the guide plate (7); Sleeve 2 (9) is fixedly installed on the outside of the glue spray tube (4) and located at one end of the thin support strip (8); The mounting ring (10) is placed on the outside of the glue spray tube (4); The flexible pin (32) is located at one end of the thin support bar (8) near the guide plate (7).

4. The automatic glue-coating device for the inner wall of a paper tube according to claim 3, characterized in that: The unblocking component includes: Guide bar (14) is set on one side of the mounting ring (10); An arc-shaped rod (15) is set at one end of the guide bar (14); A dredging strip (16) is installed through the inside of the arc-shaped rod (15); The ring (13) is set at one end of the guide bar (14) and connected to the arc rod (15).

5. The automatic glue-coating device for the inner wall of a paper tube according to claim 4, characterized in that: The unblocking component also includes: The dispensing cap (17) is located on the outside of the unblocking strip (16); The strips (18) are multiple and are arranged on one side of the dispensing cover (17); Pull plate (19) is set at the bottom end of the strip (18); A tension spring (20) is disposed inside the arc-shaped rod (15); The pressure block (21) is located below the tension spring (20) and is fixedly connected to the arc rod (15).

6. The automatic glue-coating device for the inner wall of a paper tube according to claim 5, characterized in that: The lubricating component includes: An inclined plate (22) is set on the outside of the arc-shaped rod (15) and connected to one end of the glue spray tube (4); A rubber bladder (24) is disposed inside the inclined plate (22); The shunt tube (25) is fixedly installed below the rubber bladder (24); The filling head (23) is fixedly installed above the rubber bladder (24).

7. The automatic glue-coating device for the inner wall of a paper tube according to claim 6, characterized in that: The cleaning component includes: The wall cleaning cylinder (28) is located below the inclined plate (22); The connecting ring (29) is set on the inner wall of the cleaning cylinder (28).

8. The automatic glue-coating device for the inner wall of a paper tube according to claim 7, characterized in that: The cleaning component includes: The drive block (30) is located on the outside of the connecting ring (29); The cotton wiping plate (31) is fixedly installed on the inner wall of the drive block (30).

9. The automatic glue-coating device for the inner wall of a paper tube according to claim 8, characterized in that: The adhesive separation component includes: The glue discharge groove (34) is set in the inner cavity of the inclined guide plate (35); Storage rack (26) is located below inclined plate (22); An inclined guide plate (35) is positioned above the storage rack (26); A through slot (27) is provided on one side of the storage rack (26); The diameter of the through slot (27) is smaller than that of the wall cleaning cylinder (28).

10. A method of using an automatic gluing device for the inner wall of a paper tube, applicable to the automatic gluing device for the inner wall of a paper tube as described in any one of claims 1 to 9, characterized in that, include: The staff first placed the paper tube on one side of the stabilizing frame (5) and fixed it. Then, the screw (3) was started and the slider (2) was pushed along the inner groove of the base (1) towards the inner wall of the paper tube by the screw thread. The slider (2) drove the stabilizing frame (5), the glue spraying tube (4), and the rotating nozzle (12) into the inner wall of the paper tube to prepare for the glue spraying work. Add an appropriate amount of glue from one side of the glue spray tube (4), and then use the power source of the pump to provide pressure to transport the glue stored inside the glue spray tube (4) to the top rotating nozzle (12). The rotating nozzle (12) facilitates the glue spraying treatment on the inner wall of the paper tube. Adjust the internal balance of the support, adjust the height of the thin support strip (8) and the height of the guide plate (7). After it is appropriate, fix the thin support strip (8) on the guide plate (7) with the elastic pin (32) to ensure that it is not easy to loosen when moving and spraying at the same time. Using the impact force during glue spraying, the unblocking strip (16) that was originally inside the spray hole of the rotating nozzle (12) is flushed away, the pull plate (19) moves upward and retracts inside the arc rod (15), and the paper tube inner wall is scraped during the movement. At the same time, the unblocking strip (16) will squeeze the rubber bladder (24), and the rubber bladder (24) will be squeezed out of the solution, which drips into the area around the spray hole through the diversion pipe (25) to ensure that the area around the spray hole is wet and clean. Finally, the dust on the outside of the pull plate (19) is rubbed against the inner wall of the cleaning cylinder (28) by moving upwards, thereby cleaning the residual glue solution on the outside of the pull plate (19).

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