Primer coating device

Abstract

The utility model discloses a kind of bottom glue coating devices, it is used for automatic folding paste box machine, comprising: two mutually parallel and horizontally arranged guide support shafts, the two ends of guide support shaft are fixed in glue department transmission side main wallboard and operation side main wallboard respectively;Glue cylinder moving platform is slidably supported on the two guide support shafts;Screw rod is arranged in parallel with guide support shaft and is rotated by servo motor I drive, nut is fixed in glue cylinder moving platform and is engaged with screw rod;Glue wheel drive shaft with cross section being regular hexagon, it is arranged in parallel with guide support shaft, one end is fixedly connected with the output shaft of servo motor III, the other end is rotatably supported in main wallboard;Glue wheel main drive gear seat, axial fixed support in the bearing hole of glue cylinder moving platform, can rotate along axis line.Its axial six hexagonal holes are slidably sleeved on glue wheel drive shaft.Glue cylinder body and glue wheel are fixed on glue cylinder moving platform, and glue wheel drive shaft drives glue wheel rotation by gear pair.

Description

Technical Field

[0001] This utility model relates to the printing field, and in particular to a base adhesive coating device for an automatic folding box gluing machine. Background Technology

[0002] Currently used large-format automatic folding and gluing box machines mainly consist of a paper feeding section, a correction section, a folding section, a gluing section (including base glue and spray glue), a folding and bonding section, an inspection section, and a box collecting section, etc. Figure 1 As shown. When gluing die-cut paper, corrugated paper, and other sheet materials into boxes, the positions of the supporting wall panels and conveyor belts for conveying the finished paper, corrugated paper, and other sheet materials in each component are adjusted according to the folding and gluing positions of the boxes and cartons. For example... Figure 2 As shown, this adjustment can be made manually or by jogging the motor that drives the wall panel to move. The adjustment parameters can be referenced from the values ​​displayed on the counter. Formed paper, corrugated paper, etc., are stacked in the paper feeding section and fed out one sheet at a time. After passing through the aforementioned sections in sequence, the paper and corrugated paper are folded and glued into various packaging boxes and cartons.

[0003] Among them, a base adhesive coating device is used to apply glue to the lower part and the areas requiring bonding of finished sheet materials such as die-cut paper and corrugated paper, such as... Figure 1 , Figure 2 As shown. The base adhesive coating device 2-2 is located between the main wall plate 2-1 on the transmission side and the main wall plate 2-9 on the operation side of the glue application section, and is supported on the guide support shaft 2-6. During the folding and gluing process, in addition to adjusting the position of the support wall plate 2-8 according to the product, it is also necessary to manually rotate or jog the screw drive motor in advance, and adjust the position of the glue application roller 2-3 of the base adhesive coating device 2-2 to the lower part of the finished paper, corrugated paper, and other sheet materials where glue needs to be applied through the screw drive 2-4. During gluing, while the finished paper, corrugated paper, and other sheet materials are conveyed forward, the glue application roller 2-3 rotates synchronously with the overall machine conveyor speed under the drive of the glue application roller drive shaft 2-5, and evenly applies glue to the lower surface of the finished paper, corrugated paper, and other sheet materials where glue needs to be applied. During the gluing process, the amount of glue applied by the glue application roller 2-3 needs to be manually and continuously adjusted according to the characteristics of the paper and glue until it meets the bonding quality requirements of the paper box and carton. When the gluing machine temporarily stops feeding paper for more than the set time (e.g., 2 minutes), the gluing rollers 2-3 still need to rotate at the lowest speed of the gluing machine to prevent the glue from forming a skin on the surface of the gluing rollers 2-3, which would affect subsequent gluing.

[0004] In summary, the existing technology has the following drawbacks;

[0005] 1. Manual / jog screw adjustment of the lateral position of the upper rubber wheel results in long changeover time and large human error.

[0006] 2. The glue roller speed can only be set to the lowest speed of the main machine to prevent skinning. It cannot match the optimal anti-skinning speed according to the characteristics of different glues, resulting in large fluctuations in glue volume when the machine is stopped and restarted.

[0007] 3. The scraper gap requires manual adjustment after the machine is stopped, and online closed-loop correction is not possible, which causes the amount of glue to drift with changes in ambient temperature and humidity and glue viscosity, resulting in a high scrap rate.

[0008] 4. The adjustment parameters cannot be saved and reused. Repeated debugging is required for the production of the same box type, resulting in low equipment utilization. Utility Model Content

[0009] The utility model description section introduces a series of simplified concepts, all of which are simplifications of existing technologies in the field, and will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0010] The technical problem to be solved by this utility model is to provide a base coat coating device that can automatically complete the lateral positioning of the glue-applying wheel, speed synchronization / anti-skinning, and closed-loop correction of glue amount without stopping the machine.

[0011] To solve the above-mentioned technical problems, the present invention provides a base adhesive coating device for use in an automatic folding and gluing box machine, comprising:

[0012] Two parallel and horizontally arranged guide support shafts, with their two ends fixed to the transmission side main wall panel and the operation side main wall panel of the upper adhesive section, respectively.

[0013] The glue cylinder moving platform is slidably supported on the two guide support shafts;

[0014] The screw is arranged parallel to the guide support shaft and is driven by the rotation of servo motor I. The nut is fixed to the glue cylinder moving table and meshes with the screw to drive the glue cylinder moving table to move laterally along the guide support shaft.

[0015] The upper rubber wheel drive shaft with a regular hexagonal cross section is arranged parallel to the guide support shaft. One end of it is fixedly connected to the output shaft of servo motor III, and the other end is rotatably supported on the main wall panel.

[0016] The main drive gear seat of the upper glue wheel is axially fixedly supported in the bearing hole of the glue cylinder moving table and can rotate along the axis. Its hexagonal square hole at the center of the shaft can be slidably fitted onto the drive shaft of the upper glue wheel. This allows the main drive gear seat of the upper glue wheel to slide synchronously while maintaining torque transmission when the glue cylinder moving table moves laterally.

[0017] The glue cylinder body and the glue-applying wheel are fixed to the glue cylinder moving platform. Part of the arc of the glue-applying wheel is immersed in glue and is connected to the main drive gear seat of the glue-applying wheel through a gear pair, so that the glue-applying wheel can rotate when the drive shaft of the glue-applying wheel rotates.

[0018] The scraper is close to the arc surface of the glue-applying wheel, and the servo motor II is used to drive the scraper shaft to rotate in order to adjust the gap between the scraper and the arc surface of the glue-applying wheel;

[0019] The control unit is used to receive the host linear speed signal and glue quantity detection feedback signal, and accordingly control the servo motor III to synchronize the glue application wheel speed with the host, and control the servo motor II to correct the gap between the scraper and the arc surface of the glue application wheel in real time. The control unit is also equipped with a memory to save and recall the lateral position, speed and scraper gap parameters corresponding to the box type.

[0020] Preferably, the improved base adhesive coating device further includes: a guide roller and a roller frame, wherein the guide roller is located directly above the top adhesive roller and forms a slit for the paper to pass through, so as to keep the bottom surface of the paper in contact with the top adhesive roller.

[0021] Preferably, the adhesive coating device is further improved by providing a detachable adhesive cylinder cover above the adhesive cylinder body. The upper surface of the cylinder cover is equipped with a guide plate and a guide rod for guiding the paper into the adhesive coating area.

[0022] Preferably, the base adhesive coating device is further improved, and the gear pair includes a main drive gear of the top adhesive wheel fixed to the main drive gear seat of the top adhesive wheel and a driven gear fixed to the shaft of the top adhesive wheel;

[0023] And, passing through the wheel;

[0024] The roller is modularly installed on the side wall of the glue cylinder via a small wall panel and flange seat.

[0025] Preferably, the base adhesive coating device is further improved such that when the paper feeding machine stops for more than a set time, the control unit drives the glue-applying wheel to rotate through the servo motor III according to the preset anti-skinning speed. The anti-skinning speed is adjustable in segments according to the glue viscosity-temperature curve.

[0026] Preferably, the adhesive coating device is further improved such that the adhesive quantity detection feedback signal is provided by a vision sensor or a weighing sensor.

[0027] Preferably, the primer coating device is further improved such that the control unit automatically calls up the corresponding lateral position, rotation speed and scraper gap parameters by reading the box barcode or QR code, thereby completing the rapid setting and adjustment.

[0028] The working principle of this utility model is as follows;

[0029] The primer coating device 2-2 is located between the main wall plate 2-1 on the transmission side and the main wall plate 2-9 on the operation side of the adhesive application section. The glue cylinder moving platform 3-2 of the primer coating device 2-2 is supported on two guide support shafts 2-6 on the left and right, and can be translated along the two guide support shafts 2-6. The axes of the two guide support shafts 2-6 are located on the same horizontal plane, one end of which is fixed to the main wall plate 2-1 on the transmission side of the adhesive application section, and the other end is fixed to the main wall plate 2-9 on the operation side. The transmission side of the glue cylinder moving platform 3-2 is perpendicular to the axes of the two guide support shafts 2-6. A nut 3-4 is fixed on the outer surface of the transmission side of the glue cylinder moving platform 3-2, and a screw 3-5 passes through the nut 3-4 to form a screw pair. The screw 3-5 also passes through a through hole on the operation side of the glue cylinder moving platform 3-2. One end of the screw 3-5 is supported and mounted on the operating side main wall plate 2-9, and the other end is supported and mounted on the transmission side main wall plate 2-1, and is fixedly connected to the output shaft hole of the servo motor I 3-18, which is fixedly mounted on the transmission side main wall plate 2-1. The axis of the screw 3-5 is parallel to the axis of the guide support shaft 2-6. When the servo motor I 3-18 drives the screw 3-5 to rotate, it can drive the glue cylinder moving stage 3-2 to slide on the two guide support shafts 2-6 through the cooperation of the nut 3-4. On the outer surface of the transmission side of the glue cylinder moving stage 3-2, a bearing is installed in the bearing mounting hole between the right guide support shaft 2-6 and the screw 3-5, and the bearing is fixed to the glue cylinder moving stage 3-2 by the flange cover 3-36. A main drive gear seat 3-17 for the upper glue wheel is supported and axially fixed in a bearing hole. A drive shaft 3-11 with a regular hexagonal cross-section, dynamically mating with the hexagonal square hole in the center of the main drive gear seat 3-17, passes through this hole. The drive shaft 3-11 also passes through a through hole on the operating side of the glue cylinder moving platform 3-2. One end of the drive shaft 3-11 is rotatably supported on the transmission side main wall plate 2-1, and the other end is rotatably supported on the operating side main wall plate 2-9. Its shaft end is fixedly connected to the output shaft hole of the servo motor III 3-25, which is fixedly mounted on the operating side main wall plate 2-9. The axis of the drive shaft 3-11 is parallel to the axis of the guide support shaft 2-6. When servo motor I 3-18 drives the screw assembly (composed of nut 3-4 and screw 3-5) to slide the glue cylinder moving platform 3-2 on the two guide support shafts 2-6, the upper glue wheel main drive gear seat 3-17 and the glue cylinder moving platform 3-2, which are fixedly connected, also slide synchronously on the upper glue wheel drive shaft 3-11. An upper glue wheel main drive gear 3-33 is fixedly installed on the upper glue wheel main drive gear seat 3-17. When servo motor III 3-25 drives the upper glue wheel drive shaft 3-11 to rotate, the upper glue wheel main drive gear 3-33 can be driven to rotate at any position where the glue cylinder moving platform 3-2 is stationary.

[0030] The glue cylinder body 3-13 is fixedly mounted on the top of the glue cylinder moving platform 3-2 using fixing bolts 3-15. The outer surface of the glue cylinder body 3-13 on the drive side is perpendicular to the axes of the two guide support shafts 2-6. A flange bearing 3-28 is fixedly mounted on the outer surface of the glue cylinder body 3-13 on the drive side. A bushing 3-29 is installed at both ends of the central through hole of the flange bearing 3-28. Between the two bushings 3-29, an upper glue wheel shaft 3-31 is supported and mounted. The axis of the upper glue wheel shaft 3-31 is parallel to the axis of the guide support shafts 2-6. One end of the upper glue wheel shaft 3-31 is fixedly connected to a driven gear 3-30, and the other end is fixedly connected to an upper glue wheel 3-6. When the glue cylinder body 3-13 is filled with glue, the lower part of the upper glue wheel 3-6 is immersed in the glue.

[0031] On the outer surface of the glue cylinder body 3-13 on the transmission side, a small wall plate 3-32 is fixedly installed via four small wall plate support sleeves 3-21. The small wall plate 3-32 is parallel to the outer surface of the glue cylinder moving platform 3-2 on the transmission side. Between the outer surface of the glue cylinder moving platform 3-2 on the transmission side and the inner surface of the small wall plate 3-32, a gear shaft 3-37 is fixed to the small wall plate 3-32. A bearing is installed on the gear shaft 3-37, and a flange seat 3-38 is supported on the outer ring of the bearing. A gear wheel 3-34 is fixedly installed on the flange seat 3-38. The gear wheel 3-34 meshes with the main drive gear 3-33 and the driven gear 3-30 of the upper glue wheel. When the servo motor III 3-25 drives the hexagonal cross-section upper glue wheel drive shaft 3-11 to rotate, the upper glue wheel 3-6 can be driven to rotate through the meshing of the main drive gear 3-33, the gear wheel 3-34, and the driven gear 3-30. When the gluing rollers 3-6 are tangent to the bottom of the finished sheet material such as paper or corrugated paper, their rotation direction is the same as the conveying direction of the finished sheet material such as paper or corrugated paper.

[0032] On the outer surface of the glue cylinder body 3-13 on the transmission side, near the flange bearing 3-28, a scraper bearing seat 3-24 is also fixedly installed. A scraper shaft 3-23 is installed in the through hole of the scraper bearing seat 3-24. One end of the scraper shaft 3-23 is fixedly connected to a scraper seat 3-9, and a thin scraper 3-10 is fixed on the eccentric plane of the scraper seat 3-9. One end of the scraper 3-10 is close to the arc surface of the upper glue wheel 3-6. When the scraper shaft 3-23 is rotated, the gap between the scraper 3-10 and the arc surface of the upper glue wheel 3-6 can be adjusted. The other end of the scraper shaft 3-23 is fixedly connected to the output shaft of the servo motor II 3-20 through a coupling 3-35. The servo motor II 3-20 is fixedly installed on the outer side of the small wall plate 3-32 in a position coaxial with the scraper shaft 3-23. When the gluing roller 3-6 rotates in the glue tank 3-13 filled with glue, the arc surface of the gluing roller 3-6 will be covered with glue. The servo motor II 3-20 drives the scraper shaft 3-23 to rotate, which can finely adjust the gap between the scraper 3-10 and the arc surface of the gluing roller 3-6 during the gluing process. When the arc surface of the gluing roller 3-6 passes the scraper 3-10, the amount of glue adhering to the arc surface of the gluing roller 3-6 can be precisely adjusted and controlled, thereby controlling the amount of glue used to coat sheet materials such as finished paper and corrugated paper.

[0033] A glue cylinder cover 3-12 is fixed to the top of the glue cylinder body 3-13. A guide plate 3-16 is installed on the upper surface of the glue cylinder cover 3-12, and a guide rod 3-14 is installed above the guide plate 3-16. A pressure roller frame 3-8 is also fixedly installed on the upper surface of the glue cylinder cover 3-12. One end of a guide pressure roller support shaft 3-27 is fixedly installed on the pressure roller frame 3-8, and the other end of the guide pressure roller support shaft 3-27 supports a guide pressure roller 3-7. The guide pressure roller 3-7 is located directly above the glue-applying roller 3-6 and can rotate along the axis of the guide pressure roller support shaft 3-2. The parts of the finished paper, corrugated paper, and other sheet materials that need to be coated with glue pass between the guide plate 3-16 and the guide rod 3-14, and between the glue-applying roller 3-6 and the guide pressure roller 3-7. The guide roller 3-7 is used to ensure the contact between the gluing roller 3-6 and the bottom surface of the finished paper, corrugated paper and other sheet materials, and to control the stability of the glue application on the gluing roller 3-6.

[0034] During operation, the positions of the conveying and supporting wall panels 2-2 and conveyor belts of the glue application section for finished paper, corrugated paper, and other sheet materials are adjusted according to the folding and gluing positions of the cardboard boxes and cartons. Glue is injected into the glue tank 3-13. Based on the parameters of the finished paper, corrugated paper, and other sheet materials after die-cutting and forming, which are input into the box-gluing machine control unit, the servo motor I3-18 drives the screw 3-5 to rotate. Through the nut 3-4 fixed on the glue tank moving platform 3-2, the glue tank moving platform 3-2 and the glue tank 3-13 fixed on the glue tank moving platform 3-2 slide along the two guide support shafts 2-6, moving the glue application roller 3-6 supported in the glue tank 3-13 to the lower part of the finished paper, corrugated paper, and other sheet materials, where glue needs to be applied. When finished sheet materials such as paper and corrugated paper pass between guide rod 3-14, guide plate 3-16, guide pressure roller 3-7, and gluing roller 3-6, the gluing roller 3-6 rotates at a linear speed synchronized with the conveying speed of the finished sheet materials, driven by servo motor III 3-25, main drive gear 3-33, guide roller 3-34, and driven gear 3-30. The adhesive adhering to the arc surface of the gluing roller 3-6 is applied to the lower surface of the synchronously moving sheet materials where bonding is required. If the gluing machine temporarily stops feeding paper for more than a set time (e.g., 2 minutes), the gluing roller 2-6 can arbitrarily adjust its low-speed rotation according to the characteristics of the adhesive. The detection department of the box gluing machine provides real-time feedback on the box gluing quality. Based on the feedback from the glue application monitoring, the servo motor II 3-20 will drive the scraper shaft 3-23 to rotate forward or backward in real time, adjust the gap between the scraper 3-10 and the arc surface of the glue application roller 2-6, control the amount of glue on the arc surface of the glue application roller 2-6, and thus automatically adjust the amount of glue applied until it meets the box gluing quality requirements.

[0035] The parameters adjusted for each batch can be stored in the machine's control unit. When producing the same product again, they can be directly retrieved and automatically adjusted to the correct settings.

[0036] Based on the above working principle, this utility model can achieve at least the following technical effects;

[0037] 1. The servo motor I-screw-nut pair of this utility model directly converts electrical pulses into linear displacement of the glue cylinder moving table, resulting in high lateral positioning accuracy and fast positioning speed.

[0038] 2. The servo motor III of this invention receives signals from the host encoder, ensuring that the linear speed of the gluing roller is equal to the paper speed in real time; after stopping, it automatically reduces its speed to the optimal anti-skinning speed according to the glue characteristics, preventing the glue film from cracking.

[0039] 3. The blade gap of this utility model is driven by servo motor II and continuously fine-tuned based on the feedback of glue quantity detected online. The adjustment resolution is high and it can achieve closed-loop control of glue quantity.

[0040] 4. This utility model can reduce manual intervention, lower the scrap rate, and improve production efficiency. Attached Figure Description

[0041] The accompanying drawings are intended to illustrate the general characteristics of the methods, structures, and / or materials used in specific exemplary embodiments of the present invention, supplementing the description in the specification. However, these drawings are schematic diagrams not drawn to scale and may not accurately reflect the precise structural or performance characteristics of any of the given embodiments. The drawings should not be construed as limiting or restricting the range of numerical values ​​or properties covered by the exemplary embodiments of the present invention. The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0042] Figure 1 This is a schematic diagram of the existing technology structure. Figure 1 .

[0043] Figure 2 This is a schematic diagram of the existing technology structure. Figure 2

[0044] Figure 3 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0045] Figure 4 This is a partial schematic diagram of the present invention. Figure 2 .

[0046] Figure 5 This is a cross-sectional view of the present invention.

[0047] Explanation of reference numerals in the attached figures

[0048] 1-1 Box receiving section, 1-2 Inspection section, 1-3 Folding and gluing section, 1-4 Gluing section, 1-5 Folding section, 1-6 Correction section, 1-7 Paper feeding section;

[0049] 2-1 Main wall panel on the transmission side of the glue application section, 2-2 Primer coating device, 2-3 Glue application wheel, 2-4 Screw assembly, 2-5 Glue application wheel drive shaft, 2-6 Guide support shaft, 2-72 Counter, 2-8 Support wall panel, 2-9 Main wall panel on the operation side of the glue application section;

[0050] 3-2 Glue cylinder moving platform, 3-3 Glue cylinder, 3-4 Nut, 3-5 Screw, 3-6 Applying roller, 3-7 Guide pressure roller, 3-8 Pressure roller frame, 3-9 Scraper holder, 3-10 Scraper, 3-11 Applying roller drive shaft, 3-12 Glue cylinder cover, 3-13 Glue cylinder body, 3-14 Guide rod, 3-15 Fixing bolt, 3-16 Guide plate, 3-17 Applying roller main drive gear seat, 3-18 Servo motor I, 3-20 Servo motor II 3-21 Small wall panel support sleeve, 3-22 Retaining ring, 3-23 Scraper shaft, 3-24 Scraper shaft seat, 3-25 Servo motor III, 3-27 Guide pressure roller support shaft, 3-28 Flange shaft seat, 3-29 Shaft sleeve, 3-30 Driven gear, 3-31 Upper rubber wheel shaft, 3-32 Small wall panel, 3-33 Upper rubber wheel main drive gear, 3-34 Through wheel, 3-35 Coupling, 3-36 Flange cover, 3-37 Through wheel shaft, 3-38 Flange seat. Detailed Implementation

[0051] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can fully understand other advantages and technical effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through different specific embodiments, and various details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. The following exemplary embodiments of this utility model can be implemented in many different forms and should not be construed as limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of this utility model thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art. It should be understood that when an element is referred to as "connected" or "combined" to another element, the element can be directly connected or combined to the other element, or there may be intermediate elements. The difference is that when an element is referred to as "directly connected" or "directly combined" to another element, there are no intermediate elements. Throughout the drawings, the same reference numerals always denote the same elements.

[0052] Example

[0053] refer to Figures 3-5 As shown, this utility model provides a base adhesive coating device for use in an automatic folding and gluing box machine, comprising:

[0054] There are two guide support shafts 2-6, one end of which is fixed to the transmission side main wall plate 2-1 of the glue application unit, and the other end is fixed to the operation side main wall plate 2-9. The axes of the two guide support shafts 2-6 are located on the same horizontal plane and are perpendicular to the transmission side main wall plate 2-19 and the operation side main wall plate 2-9. The glue cylinder moving platform 3-2 of a primer coating device 2-2 is supported on the two guide support shafts 2-6 and can be translated along the two guide support shafts 2-6. The transmission side of the glue cylinder moving platform 3-2 is perpendicular to the axes of the two guide support shafts 2-6. A nut 3-4 is fixed on the outer surface of the transmission side of the glue cylinder moving platform 3-2, and a screw 3-5 passes through the nut 3-4 to form a screw pair. The screw 3-5 also passes through a through hole on the operation side of the glue cylinder moving platform 3-2. One end of the screw 3-5 is supported and mounted on the operating side main wall plate 2-9, and the other end is supported and mounted on the transmission side main wall plate 2-19, and is fixedly connected to the output shaft hole of the servo motor I 3-18, which is fixedly mounted on the transmission side main wall plate 2-19. The axis of the screw 3-5 is parallel to the axis of the guide support shaft 2-6. When the servo motor I 3-18 drives the screw 3-5 to rotate, it can drive the glue cylinder moving stage 3-2 to slide on the two guide support shafts 2-6 through the cooperation with the nut 3-4.

[0055] On the outer surface of the glue cylinder moving platform 3-2 on the transmission side, a bearing is installed in the bearing mounting hole between the guide support shaft 2-6 and the screw 3-5 on the right side. The bearing is fixed to the glue cylinder moving platform 3-2 by the flange cover 3-36. The upper glue wheel main drive gear seat 3-17 is supported and axially fixed in the bearing hole. An upper glue wheel drive shaft 3-11 with a regular hexagonal cross-section, dynamically mating with the hexagonal square hole in the center of the upper glue wheel main drive gear seat 3-17, passes through it. The upper glue wheel drive shaft 3-11 also passes through a through hole on the operating side of the glue cylinder moving platform 3-2. One end of the upper glue wheel drive shaft 3-11 is rotatably supported on the transmission side main wall plate 2-19, and the other end is rotatably supported on the operating side main wall plate 2-9. Its shaft end is fixedly connected to the output shaft hole of the servo motor III 3-25, which is fixedly mounted on the operating side main wall plate 2-9. The axis of the glue-filling wheel drive shaft 3-11 is parallel to the axis of the guide support shaft 2-6. When the servo motor I 3-18 drives the screw to make the glue cylinder moving platform 3-2 slide on the two guide support shafts 2-6, the glue-filling wheel main drive gear seat 3-17 and the glue cylinder moving platform 3-2 fixedly connected also slide synchronously on the glue-filling wheel drive shaft 3-11. A glue-filling wheel main drive gear 3-33 is fixedly installed on the glue-filling wheel main drive gear seat 3-17. When the servo motor III 3-25 drives the glue-filling wheel drive shaft 3-11 to rotate, the glue cylinder moving platform 3-2 can be driven to rotate at any position where it is stationary.

[0056] The glue cylinder body 3-13 is fixedly mounted on the top of the glue cylinder moving platform 3-2 using fixing bolts 3-15. The outer surface of the glue cylinder body 3-13 on the drive side is perpendicular to the axes of the two guide support shafts 2-6. A flange bearing 3-28 is fixedly mounted on the outer surface of the glue cylinder body 3-13 on the drive side. A bushing 3-29 is installed at both ends of the central through hole of the flange bearing 3-28. Between the two bushings 3-29, an upper glue wheel shaft 3-31 is supported and mounted. The axis of the upper glue wheel shaft 3-31 is parallel to the axis of the guide support shafts 2-6. One end of the upper glue wheel shaft 3-31 is fixedly connected to a driven gear 3-30, and the other end is fixedly connected to an upper glue wheel 3-6. When the glue cylinder body 3-13 is filled with glue, the lower part of the upper glue wheel 3-6 is immersed in the glue.

[0057] On the outer surface of the glue cylinder body 3-13 on the transmission side, a small wall plate 3-32 is fixedly installed via four small wall plate support sleeves 3-21. The small wall plate 3-32 is parallel to the outer surface of the glue cylinder moving platform 3-2 on the transmission side. Between the outer surface of the glue cylinder moving platform 3-2 on the transmission side and the inner surface of the small wall plate 3-32, a gear shaft 3-37 is fixed to the small wall plate 3-32. A bearing is installed on the gear shaft 3-37, and a flange seat 3-38 is supported on the outer ring of the bearing. A gear wheel 3-34 is fixedly installed on the flange seat 3-38. The gear wheel 3-34 meshes with the main drive gear 3-33 and the driven gear 3-30 of the upper glue wheel. When the servo motor III 3-25 drives the hexagonal cross-section upper glue wheel drive shaft 3-11 to rotate, the upper glue wheel 3-6 can be driven to rotate through the meshing of the main drive gear 3-33, the gear wheel 3-34, and the driven gear 3-30. When the gluing rollers 3-6 are tangent to the bottom of the finished sheet material such as paper or corrugated paper, their rotation direction is the same as the conveying direction of the finished sheet material such as paper or corrugated paper.

[0058] On the outer surface of the glue cylinder body 3-13 on the transmission side, near the flange bearing 3-28, a scraper bearing seat 3-24 is also fixedly installed. A scraper shaft 3-23 is installed in the through hole of the scraper bearing seat 3-24. One end of the scraper shaft 3-23 is fixedly connected to a scraper seat 3-9, and a thin scraper 3-10 is fixed on the eccentric plane of the scraper seat 3-9. One end of the scraper 3-10 is close to the arc surface of the upper glue wheel 3-6. When the scraper shaft 3-23 is rotated, the gap between the scraper 3-10 and the arc surface of the upper glue wheel 3-6 can be adjusted. The other end of the scraper shaft 3-23 is fixedly connected to the output shaft of the servo motor II 3-20 through a coupling 3-35. The servo motor II 3-20 is fixedly installed on the outer side of the small wall plate 3-32 in a position coaxial with the scraper shaft 3-23. When the gluing roller 3-6 rotates in the glue tank 3-13 filled with glue, the arc surface of the gluing roller 3-6 will be covered with glue. The servo motor II 3-20 drives the scraper shaft 3-23 to rotate, which can finely adjust the gap between the scraper 3-10 and the arc surface of the gluing roller 3-6 during the gluing process. When the arc surface of the gluing roller 3-6 passes the scraper 3-10, the amount of glue adhering to the arc surface of the gluing roller 3-6 can be precisely adjusted and controlled, thereby controlling the amount of glue used to coat sheet materials such as finished paper and corrugated paper.

[0059] A glue cylinder cover 3-12 is fixed to the top of the glue cylinder body 3-13. A guide plate 3-16 is installed on the upper surface of the glue cylinder cover 3-12, and a guide rod 3-14 is installed above the guide plate 3-16. A pressure roller frame 3-8 is also fixedly installed on the upper surface of the glue cylinder cover 3-12. One end of a guide pressure roller support shaft 3-27 is fixedly installed on the pressure roller frame 3-8, and the other end of the guide pressure roller support shaft 3-27 supports a guide pressure roller 3-7. The guide pressure roller 3-7 is located directly above the glue-applying roller 3-6 and can rotate along the axis of the guide pressure roller support shaft 3-2. The parts of the finished paper, corrugated paper, and other sheet materials that need to be coated with glue pass between the guide plate 3-16 and the guide rod 3-14, and between the glue-applying roller 3-6 and the guide pressure roller 3-7. The guide roller 3-7 is used to ensure the contact between the gluing roller 3-6 and the bottom surface of the finished paper, corrugated paper and other sheet materials, and to control the stability of the glue application on the gluing roller 3-6.

[0060] During operation, the positions of the support wall plate 2-2 and conveyor belt of the gluing section for conveying and supporting finished paper, corrugated paper, and other sheet materials are adjusted according to the folding and gluing positions of the cardboard boxes and cartons. Glue is injected into the glue tank 3-13. Based on the parameters of the finished paper, corrugated paper, and other sheet materials after die-cutting and forming, which are input into the gluing machine control system, the servo motor I3-18 drives the screw 3-5 to rotate. Through the nut 3-4 fixed on the glue tank moving platform 3-2, the glue tank moving platform 3-2 and the glue tank 3-13 fixed on the glue tank moving platform 3-2 slide along the two guide support shafts 2-6, moving the gluing roller 3-6 supported in the glue tank 3-13 to the lower part of the finished paper, corrugated paper, and other sheet materials, where glue needs to be applied. When finished sheet materials such as paper and corrugated paper pass between guide rod 3-14, guide plate 3-16, guide pressure roller 3-7, and gluing roller 3-6, the gluing roller 3-6 rotates at a linear speed synchronized with the conveying speed of the finished sheet materials, driven by servo motor III 3-25, main drive gear 3-33, guide roller 3-34, and driven gear 3-30. The adhesive adhering to the arc surface of the gluing roller 3-6 is applied to the lower surface of the synchronously moving sheet materials where bonding is required. If the gluing machine temporarily stops feeding paper for more than a set time (e.g., 2 minutes), the gluing roller 2-6 can arbitrarily adjust its low-speed rotation according to the characteristics of the adhesive. The detection department of the box gluing machine provides real-time feedback on the box gluing quality. Based on the feedback from the glue application monitoring, the servo motor II 3-20 will drive the scraper shaft 3-23 to rotate forward or backward in real time, adjust the gap between the scraper 3-10 and the arc surface of the glue application roller 2-6, control the amount of glue on the arc surface of the glue application roller 2-6, and thus automatically adjust the amount of glue applied until it meets the box gluing quality requirements.

[0061] The parameters adjusted for each batch can be stored in the machine's control system. When producing the same product again, they can be directly retrieved and automatically adjusted to the correct settings.

[0062] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will also be understood that, unless expressly defined herein, terms such as those defined in a general dictionary shall be interpreted as having the meaning consistent with their meaning in the relevant field context, and not as having an idealized or overly formal meaning.

[0063] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the present invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A base adhesive coating device for use in an automatic folding and gluing box machine, characterized in that, include: Two parallel and horizontally arranged guide support shafts, with their two ends fixed to the transmission side main wall panel and the operation side main wall panel of the upper adhesive section, respectively. The glue cylinder moving platform is slidably supported on the two guide support shafts; The screw is arranged parallel to the guide support shaft and is driven by the rotation of servo motor I. The nut is fixed to the glue cylinder moving table and meshes with the screw to drive the glue cylinder moving table to move laterally along the guide support shaft. The upper rubber wheel drive shaft with a regular hexagonal cross section is arranged parallel to the guide support shaft. One end of it is fixedly connected to the output shaft of servo motor III, and the other end is rotatably supported on the main wall panel. The main drive gear seat of the glue roller is axially fixed and supported in the bearing hole of the glue cylinder moving table. It can rotate along the axis, and its hexagonal square hole can be slidably sleeved on the drive shaft of the glue roller. The glue cylinder body and the glue-applying wheel are fixed to the glue cylinder moving platform. Part of the glue-applying wheel is immersed in glue and is connected to the main drive gear seat of the glue-applying wheel through a gear pair. The scraper is close to the arc surface of the glue-applying wheel, and the servo motor II is used to drive the scraper shaft to rotate in order to adjust the gap between the scraper and the surface of the glue-applying wheel; The control unit is used to receive the main unit's linear speed signal and glue quantity detection feedback signal, and accordingly control the servo motor III to synchronize the glue application roller speed with the main unit, and control the servo motor II to correct the gap between the scraper and the arc surface of the glue application roller in real time.

2. The primer coating apparatus as described in claim 1, characterized in that, Also includes: The guide roller and roller frame are located directly above the top glue roller and form a slit for the paper to pass through.

3. The primer coating apparatus as described in claim 1 or 2, characterized in that: The glue tank is equipped with a removable glue tank cover. The upper surface of the cover is fitted with a guide plate and a guide rod to guide the paper into the glue application area.

4. The primer coating apparatus as described in claim 1, characterized in that: The gear pair includes the main drive gear of the upper rubber wheel fixed to the main drive gear seat of the upper rubber wheel, and the driven gear fixed to the shaft of the upper rubber wheel; And, the guide wheel; the guide wheel is modularly installed on the side wall of the glue cylinder via a small wall panel and flange seat.

5. The primer coating apparatus as described in claim 1, characterized in that: When the paper feeding machine stops for more than the set time, the control unit drives the glue roller to rotate through the servo motor III according to the preset anti-skinning speed. The anti-skinning speed is adjustable in segments according to the glue viscosity-temperature curve.

6. The primer coating apparatus as described in claim 1 or 5, characterized in that: The glue volume detection feedback signal is provided by a vision sensor or a weighing sensor.

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