High-precision gluing machine

Abstract

The application discloses a high-precision gluing machine, comprising: a rack, a top preheating mechanism, at least one set of gluing module and a lower preheating mechanism; the top preheating mechanism is arranged on the upper side of the rack, and the top preheating mechanism comprises a preheating cylinder for preheating the upper corrugated paper; the gluing module comprises a gluing mechanism for gluing the corrugated paper, a paper pressing quick switching mechanism arranged on the upper side of the gluing mechanism and matched with the gluing mechanism, an automatic paste separating mechanism and a glue scraping mechanism matched with the gluing mechanism; the lower preheating mechanism is arranged at the lowermost position of the rack and is used for heating the lower corrugated paper; an infrared light curtain detector is arranged on the rack. The application greatly reduces glue waste, realizes intelligent automation and unattended operation of the process, liberates labor, has high precision, reduces downtime and greatly saves the cost of customers.

Description

Technical Field

[0001] This invention relates to the field of corrugated cardboard production equipment technology, and in particular to a high-precision glue coating machine. Background Technology

[0002] In a corrugated cardboard production line, the automatic gluing machine (gluing machine) is a crucial piece of equipment. Its function is to apply adhesive to the corrugated cardboard, making it stronger and facilitating better bonding on the double-facer to form the final corrugated cardboard. All components of the entire corrugated cardboard production line are interconnected. Existing corrugated machines have the following shortcomings: 1. Conventional gluing machines are equipped with either pressure rollers or pressure bars, requiring different paper weights for each order, making them unsuitable for diverse production needs. 2. During the gluing process, glue overflows, leaving glue on the edges of the corrugated cardboard. After forming, the edges need trimming, resulting in glue waste. As the cardboard passes through the production line, glue residue accumulates on the equipment, creating stubborn glue stains that require manual removal, cleaning of the conveyor belt, and machine downtime, wasting labor and costs. 3. After a certain period of operation, glue residue remains on the scraping rollers. Currently, the practice is to stop the machine and manually scrape out the residue, resulting in glue waste and increased costs. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a high-precision glue applicator that greatly reduces glue waste, enables the process to be intelligently automated and unattended, liberates labor, and at the same time, the equipment has high precision, reduces downtime, and greatly saves costs for customers.

[0004] To achieve the above objectives, the present invention provides a high-precision glue applicator, comprising a frame, a top-level preheating mechanism, at least one set of glue application modules, and a lower-level preheating mechanism;

[0005] The top-layer preheating mechanism is located on the upper side of the frame, and the top-layer preheating mechanism includes a preheating cylinder for preheating the upper corrugated paper.

[0006] The gluing module includes a gluing mechanism for gluing corrugated paper, a paper pressing quick switching mechanism disposed on the upper side of the gluing mechanism and cooperating with the gluing mechanism, an automatic glue separation mechanism, and a glue scraping mechanism cooperating with the gluing mechanism.

[0007] The paper pressing quick switching mechanism includes two symmetrically arranged end plates, which are fixed to the frame. A switching cylinder and a transmission component rotatably disposed on the inner side of the end plates are provided between the frame. The paper pressing roller and the pressure bar are respectively connected to the transmission component. The switching cylinder is connected to the transmission component to realize the rotation and alternation of the positions of the paper pressing roller and the pressure bar.

[0008] The automatic glue-separating mechanism includes a support base fixed on the frame, and displacement components arranged opposite to each other on the left and right sides of the support base. Each set of displacement components is connected to a set of glue-separating devices. The glue-separating device includes a lifting component and a glue-separating block connected to the lifting component.

[0009] The lower preheating mechanism is located at the bottom of the frame and is used to heat the lower corrugated paper.

[0010] An infrared light curtain detector is installed on the frame.

[0011] Furthermore, the gluing mechanism includes a slurry tray, a gluing motor fixed to the frame, and a gluing roller and a scraper roller connected to the gluing motor. A gluing channel for the corrugated paper to pass through is formed between the gluing roller and the scraper roller. The lower side of the gluing roller is placed inside the slurry tray. This allows the corrugated paper to pass between the gluing roller and the scraper roller, and the lower side of the gluing roller being placed inside the slurry tray allows the glue in the slurry tray to be applied to its surface for gluing.

[0012] Furthermore, the scraping mechanism includes a scraping main seat fixedly connected to the frame and a scraping rotating seat disposed on the scraping main seat. The scraping rotating seat is provided with a scraping blade. The scraping main seat has a scraping connecting hole for mounting the scraping rotating seat. One side of the connecting hole has an opening, and a bolt is provided on the scraping main seat to lock the opening. The scraping blade rotating seat allows for arbitrary adjustment of the scraping blade angle and the front-to-back contact distance between the scraping blade and the scraping roller. During installation, the scraping blade is adjusted to the optimal working position, minimizing wear on the scraping roller and significantly extending its service life while meeting operational requirements.

[0013] Furthermore, the transmission component is generally triangular in structure. The pressure roller, the pressure bar, and the switching cylinder are connected to the three ends of the transmission component, respectively. A flange bearing is provided on the end plate, and the middle part of the transmission component is connected to the flange bearing to achieve rotation. The triangular transmission component, in conjunction with the switching cylinder, enables automatic switching between the pressure roller and the pressure bar, which is quick and convenient.

[0014] Furthermore, a limiting seat is provided at one end of the end plate, and an outwardly extending limiting block is provided inside the limiting seat. The limiting block is provided with an inclined top contact surface. The water spray pipe is located between the two end plates and is adjacent to the paper feed guide roller. The limiting seat can limit the switching stroke and improve the switching accuracy.

[0015] Furthermore, the separator block is provided with an insertion part, the cross-section of the insertion part is triangular, and the front and rear sides of the insertion part are respectively provided with a first concave arc surface and a second concave arc surface. The junction of the first concave arc surface and the second concave arc surface forms a sharp part, and the left and right sides of the insertion part form flat surfaces.

[0016] The displacement assembly includes a movable photoelectric limit sensor and a ball screw mounted on the support base. A movable seat is connected to the ball screw, and a glue-blocking servo motor is connected to the input end of the ball screw. The photoelectric limit sensor is respectively located at the beginning and end of the ball screw's stroke. This allows the insertion part to better fit with the glue roller and scraper roller, improving their blocking effect on the edges of the corrugated paper and preventing glue from sticking to the edges of the corrugated paper.

[0017] Furthermore, the grout-separating device also includes a grout-separating main seat fixed to the movable seat, a first through hole is provided on the lower side of the support seat, an extension is provided on the lower side of the grout-separating main seat, the extension passes through the first through hole and is connected to the displacement component, and the lifting component is disposed on the grout-separating main seat;

[0018] The aforementioned lifting assembly also includes a fixing component, which is fixedly connected to the insulating main seat. The connecting component is connected to the lifting cylinder via a spherical bearing. The other end of the connecting component away from the lifting cylinder is connected to a pivot rotating shaft, and both ends of the rotating shaft are movably mounted on the fixing component.

[0019] A first sliding hole matching both ends of the rotating shaft is provided on the front side of the fixing component, and both ends of the rotating shaft are sleeved into the first sliding hole. This improves the flexibility of the separator's movement and makes its position adjustment more precise.

[0020] Furthermore, the top-layer preheating mechanism includes a preheating cylinder movably mounted on the frame, a preheating servo motor for driving the preheating cylinder to rotate, and a top-layer guide assembly located above the preheating cylinder. The top-layer guide assembly includes a top-layer adjustment motor fixed on the frame, a top-layer adjustment plate connected to the top-layer adjustment motor, and two sets of top-layer guide shafts respectively located on both sides of the top-layer adjustment plate. This achieves preheating of the top corrugated paper, improving the bonding effect.

[0021] Furthermore, the top-layer guide assembly also includes an adjusting transmission gear movably disposed between the preheating cylinder and the frame, and an adjusting transmission shaft connected to the top-layer adjusting motor. Both ends of the adjusting transmission shaft are connected to connecting gears that mesh with the adjusting transmission gear. The top-layer adjusting plate extends downward to form a fixed connection portion, which is fixedly connected to the adjusting transmission gear. The adjustable configuration of the top-layer guide assembly can adapt to the spacing requirements of different corrugated papers.

[0022] Furthermore, the lower preheating mechanism includes an arc-shaped drying plate and a first guide wheel and a second guide wheel respectively movably mounted on the frame. The first guide wheel and the second guide wheel are respectively located on both sides of the arc-shaped drying plate. This achieves preheating of the lower corrugated paper, improving the bonding effect.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. This device is equipped with a top-level preheating mechanism and a bottom-level preheating mechanism, which can preheat the top-level single-wall paper and the face paper, promote better glue application on the top-level single-wall paper and the face paper, improve the bonding quality, and increase the production line speed.

[0025] 2. Equipped with a quick paper pressure switching mechanism, it can switch the gluing and pressure modes of the gluing machine with one click to adapt to different orders and different materials of raw paper, improve the gluing quality of single corrugated paper, optimize production, and reduce glue waste.

[0026] 3. By contacting the PU scraper with the scraper roller, residual glue on the surface of the scraper roller is removed. The glue falls back into the slurry basin for recycling, which helps to extend the service life of the scraper roller and prevent glue from splashing off the scraper roller.

[0027] 4. The intelligent drive block adjusts and moves left and right to isolate the glue application width of the glue roller and the scraper roller, so that the glue is the same width as or smaller than the width of the corrugated paper and does not spread or overflow, achieving the effect of no glue leakage. This greatly reduces glue waste caused by trimming and cutting the edges after the cardboard is formed, reduces manual cardboard scraping and cleaning of the large belt, and reduces the frequency of machine downtime. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a high-precision glue applicator according to the present invention;

[0030] Figure 2 yes Figure 1 A cross-sectional view along line AA;

[0031] Figure 3 This is a schematic diagram of the top-level preheating mechanism of the present invention;

[0032] Figure 4 This is a schematic diagram of the adhesive application module of the present invention;

[0033] Figure 5 This is a schematic diagram of the adhesive application mechanism of the present invention;

[0034] Figure 6 These are schematic diagrams of the adhesive scraping mechanism of the present invention from two different perspectives.

[0035] Figure 7This is a schematic diagram of the paper pressing quick switching mechanism of the present invention;

[0036] Figure 8 yes Figure 7 Another perspective illustration;

[0037] Figure 9 This is an assembly diagram of the end plate, switching cylinder, paper pressure roller and pressure bar of the present invention;

[0038] Figure 10 This is a schematic diagram of the structure of the pressure bar of the present invention;

[0039] Figure 11 yes Figure 10 Enlarged diagram of region B in the image;

[0040] Figure 12 This is a schematic diagram of the automatic grout separation mechanism of the present invention;

[0041] Figure 13 yes Figure 12 Another perspective illustration;

[0042] Figure 14 This is a schematic diagram of the structure of the separator module of the present invention;

[0043] Figure 15 This is a schematic diagram showing the automatic glue-separating mechanism of the present invention in cooperation with the glue-applying roller and the glue-scraping roller;

[0044] Figure 16 This is a schematic diagram illustrating the working principle of the automatic separator mechanism of the present invention;

[0045] Figure 17 This is a schematic diagram of the operation of producing five-layer corrugated paper in conjunction with a double-sided machine according to the present invention.

[0046] The diagram includes:

[0047] 1. Frame; 2. Top layer preheating mechanism; 21. Preheating cylinder; 22. Preheating servo motor; 23. Top layer adjustment motor; 24. Top layer adjustment plate; 25. Top layer guide shaft; 26. Adjustment transmission gear; 27. Adjustment transmission shaft; 28. Connecting gear; 29. ​​Fixed joint; 3. Gluing module; 4. Lower layer preheating mechanism; 41. Arc-shaped drying plate; 42. First guide wheel; 43. Second guide wheel; 5. Gluing mechanism; 51. Pulp tray; 52. Gluing motor; 53. Gluing roller; 54. Glue scraper roller; 55. Gluing channel; 6. Paper pressing mechanism Switching mechanism; 61. End plate; 611. Hanging groove; 612. Inclined arm; 613. Third flange bearing; 614. Limit seat; 6141. Limit block; 615. Reinforcing component; 6151. Angle steel bar; 62. Switching cylinder; 63. Transmission component; 64. Paper feed guide roller; 641. First flange bearing; 642. Second flange bearing; 65. Paper output guide roller; 66. Water spray pipe; 661. Support component; 67. Paper pressure roller; 68. Pressure bar; 681. Pressure base; 6811. Limit hole; 682. Pressure block; 68 21. Elastic part; 6822. Pressing part; 6823. Limiting component; 6824. Return spring; 69. Cylindrical reinforcing rib; 7. Automatic glue separation mechanism; 71. Support base; 711. Grooved square tube; 712. First through hole; 72. Displacement component; 721. Ball screw; 722. Moving base; 723. Guide rod; 724. Glue separation servo motor; 725. Planetary reducer; 73. Photoelectric limit sensor; 74. Glue separation module; 741. Glue separation block; 7411. Connecting arm; 7412. Insertion part; 7413. First 7414. Second concave arc surface; 742. Glue separator main seat; 7421. Extension; 743. Lifting cylinder; 744. Fixing component; 7441. First sliding hole; 745. Spherical bearing; 746. Connecting component; 747. Pivot rotation shaft; 8. Glue scraping mechanism; 81. Glue scraping main seat; 82. Glue scraping rotating seat; 83. Glue scraping blade; 84. Glue scraping connecting hole; 85. Opening; 9. Infrared light curtain detector; 100. Upper single-layer corrugated paper; 101. Lower single-layer corrugated paper; 102. Face paper; 103. Double-sided machine. Detailed Implementation

[0048] The technical solution of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0050] Furthermore, if the embodiments of the present invention involve descriptions such as "first" or "second", such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0051] Please see Figures 1 to 17 The present invention provides a high-precision glue applicator.

[0052] The high-precision glue applicator in this embodiment, such as Figure 1 and Figure 2 As shown, it includes a frame 1, a top preheating mechanism 2, at least one set of gluing modules 3 and a lower preheating mechanism 4. The number of gluing modules 3 in this invention is selected according to the number of layers of corrugated paper. For example, the production of five-layer corrugated paper requires the use of two sets of gluing modules 3 in combination. If three-layer corrugated paper is produced, only one set of gluing modules 3 is needed.

[0053] like Figures 1 to 3 As shown, the aforementioned top-layer preheating mechanism 2 is located on the upper side of the frame 1. The top-layer preheating mechanism 2 includes a preheating cylinder 21 for preheating the upper corrugated paper. Specifically, it includes a preheating cylinder 21 movably mounted on the frame 1, a preheating servo motor 22 for driving the preheating cylinder 21 to rotate, and a top-layer guide assembly located above the preheating cylinder 21. The preheating servo motor 22 is fixedly connected to the frame 1. By connecting the preheating servo motor 22 to the main shaft of the preheating servo motor 22 through a bearing mounted on the frame 1, the preheating servo motor 22 drives the preheating cylinder 21 to rotate. The top-layer guide assembly also includes a top-layer adjustment motor 23 fixedly mounted on the frame 1 and a top-layer adjustment mechanism connected to the top-layer adjustment motor 23. The top adjustment plate 24 includes two sets of top guide shafts 25 respectively disposed on both sides of the top adjustment plate 24, an adjustment transmission gear 26 movably disposed between the preheating cylinder 21 and the frame 1, and an adjustment transmission shaft 27 connected to the top adjustment motor 23. The two ends of the adjustment transmission shaft 27 are connected to connecting gears 28 that mesh with the adjustment transmission gear 26. The top adjustment plate 24 extends downward to form a fixed connection part 29, which is fixedly connected to the adjustment transmission gear 26. This allows the top adjustment motor 23 to drive the adjustment transmission gear 26 to rotate in both directions through the adjustment transmission shaft 27, thereby adjusting the position of the guide shaft and adapting to the spacing requirements of different corrugated papers.

[0054] like Figure 2 and Figure 4As shown, the gluing module 3 includes a gluing mechanism 5 for gluing corrugated paper, a paper pressing quick switching mechanism 6 disposed on the upper side of the gluing mechanism 5 and cooperating with the gluing mechanism 5, an automatic glue separation mechanism 7, and a glue scraping mechanism 8 cooperating with the gluing mechanism 5.

[0055] like Figure 5 As shown, the above-mentioned gluing mechanism 5 includes a slurry tray 51, a gluing motor 52 fixed on the frame 1, and a gluing roller 53 and a scraper roller 54 connected to the gluing motor 52. As shown, the gluing roller 53 and the scraper roller 54 are close to each other, so that a gluing channel 55 for corrugated paper to pass through is formed between the gluing roller 53 and the scraper roller 54. The lower side of the gluing roller 53 is placed inside the slurry tray 51. In this way, when the gluing roller 53 rotates, it can stick the glue in the slurry tray 51 to its surface, and cooperate with the scraper roller 54 to glue the surface of the corrugated paper. In this embodiment, the gluing roller 53 and the scraper roller 54 are rotated synchronously by the gluing motor 52.

[0056] During normal operation, the glue scraping mechanism 8 needs to scrape off the residual glue on the glue scraping roller 54, such as... Figure 6 As shown, the scraping mechanism 8 includes a scraping main seat 81 fixed to the frame 1 and a scraping rotating seat 82 disposed on the scraping main seat 81. A scraper blade 83 is disposed on the scraper rotating seat 82. The scraper blade 83 of this invention is made of PU material, which is clean, does not damage the scraping roller, is easy to replace, and is cost-effective. The scraper main seat 81 has a scraper connecting hole 84 for mounting the scraper rotating seat 82. An opening 85 is opened on one side of the connecting hole. A bolt is provided on the scraper main seat 81 to lock the opening 85. When the angle of the scraper blade 83 needs to be adjusted, simply loosen the bolt and open the opening 85, then adjust. The scraper rotating seat allows for arbitrary adjustment of the scraper blade angle and the front-to-back contact distance between the scraper blade and the scraper roller 54. During installation, the scraper blade is adjusted to the optimal working position, minimizing wear on the scraper roller 54 and greatly extending its service life while meeting operational requirements.

[0057] like Figures 7 to 9 As shown, the paper pressing quick switching mechanism 6 includes two symmetrically arranged end plates 61, which are fixed to the frame 1. A switching cylinder 62 and a transmission component 63 rotatably arranged inside the end plates 61 are provided between the frame 1. The paper pressing roller 67 and the pressure bar 68 are respectively connected to the transmission component 63. The switching cylinder 62 is connected to the transmission component 63 to realize the rotation and position change of the paper pressing roller 67 and the pressure bar 68.

[0058] Specifically, in this embodiment, the paper pressing quick switching mechanism 6 also includes a paper feed guide roller 64, a paper output guide roller 65, and a water spray pipe 66. The paper feed guide roller 64 is mounted on the frame 1 and can rotate freely via bearings. As shown in the figure, the paper feed guide roller 64 is positioned above the gluing roller 53 and the scraping roller 54, allowing the corrugated paper to pass through the paper feed guide roller 64 before entering the gluing channel 55 for processing. The other end of the end plates 61, away from the paper output guide roller 65, is attached to the paper feed guide roller 64. Specifically, a first flange bearing 641 and a second flange bearing 642 are sequentially and movably connected to both ends of the paper feed guide roller 64. The first flange bearing 641 and the second flange bearing 642 are... The end plate is equipped with an embedded bearing. The lower side of the end plates 61 is provided with a mounting groove 611, which is mounted on the first flange bearing 641. After the end plates 61 are mounted on the first flange bearing 641, the outer edge of the first flange bearing 641 is fixed to the periphery of the mounting groove 611 by screws and other parts. In order to achieve a height difference between the paper output guide roller 65 and the paper feed guide roller 64, an inclined arm 612 is formed at the other end of the end plate 61 away from the paper feed guide roller 64, which is inclined downward and in the opposite direction to the paper feed guide roller 64. The paper output guide roller 65 is mounted on the inclined arm 612, so that the paper output guide roller 65 and the paper feed guide roller 64 are set with a staggered inclined height difference. This allows the corrugated paper to be straightened better when glued, thus improving the glued quality.

[0059] like Figure 10 and Figure 11 As shown, the pressure bar 68 includes a pressure base 681 and several pressure blocks 682. The two ends of the pressure base 681 are fixedly connected to the transmission component 63. The two ends of the pressure roller 67 are rotatably connected to the transmission component 63 through bearings. The pressure block 682 includes an integrally formed elastic part 6821 and a pressure part 6822. The elastic part 6821 is fixedly connected to the pressure base 681. The inner side of the pressure part 6822 is connected to a limiting component 6823. A limiting hole 6811 is provided on the pressure base 681. The limiting component 6823 is inserted into the limiting hole 6811. A return spring 6824 is provided on the limiting component 6823. The return spring 6824 is placed between the pressure part 6822 and the pressure base 681.

[0060] The aforementioned pressure roller 67 and pressure bar 68 are positioned between the feed guide roller 64 and the output guide roller 65. Specifically, the aforementioned transmission component 63 has an overall triangular structure. The pressure roller 67, pressure bar 68, and switching cylinder 62 are respectively connected to the three ends of the transmission component 63. Furthermore, in order to improve the efficiency of the rotational force transmission, the length of the end of the transmission component 63 connected to the switching cylinder 62 can be set to be slightly larger than the lengths of the other two ends. A third flange bearing 613 is provided on the end plate 61. The middle position of the transmission component 63 is connected to the third flange bearing 613 to achieve rotation. Furthermore, a limit seat 614 is provided at one end of the end plate 61. A limit block 6141 extending outward is provided on the inner side of the limit seat 614. The limit block 6141 is provided with an inclined top contact surface, which plays a certain limiting role for the transmission component 63 and the switching cylinder 62. When providing rotational accuracy, it avoids excessive rotational stroke, which may affect the position of the pressure roller 67 and pressure bar 68 after conversion, preventing them from being properly glued.

[0061] The switching cylinder 62 drives the transmission component 63 to rotate. It is necessary to ensure that the two transmission components 63 operate synchronously. In order to enhance the synchronization rate, the switching cylinder 62 is connected to one side of the transmission component 63, and the other side of the transmission component 63 is connected to a cylindrical reinforcing rib 69. The linkage through the cylindrical reinforcing rib 69 can not only improve the overall structural strength, but also effectively enhance its rotation linkage.

[0062] A water spray pipe 66 is located between two end plates 61, adjacent to the paper feed guide roller 64. Each end plate 61 has a support member 661 inclined towards the paper feed guide roller 64. The water spray pipe 66 is fixed to the support member 661. Multiple sets of evenly distributed water spray nozzles are provided on the water spray pipe 66, facing the middle position between the paper feed guide roller 64 and the paper output guide roller 65. In this embodiment, to improve the structural rigidity between the two end plates 61, a reinforcing member 615 is provided between the two end plates 61. The reinforcing member 615 has an "L"-shaped cross-section, and multiple angle steel bars 6151 are evenly arranged on the reinforcing member 615. The angle steel bars 6151 have guide slopes facing the pressure roller 67 and the pressure bar 68.

[0063] like Figure 12 and Figure 14As shown, the automatic gluing mechanism 7 includes a support base 71 fixed on the frame 1. On the left and right sides of the support base 71, opposing displacement components 72 are respectively arranged. Each displacement component 72 includes a ball screw 721 movably mounted on the support base 71. Bearings are mounted on the support base 71, and both ends of the ball screw 721 are connected to the bearings. A movable seat 722 is connected to the ball screw 721. A guide rod 723 connected to the movable seat 722 is also mounted on the support base 71. A gluing servo motor 724 is connected to the input end of the ball screw 721. To increase the output torque of the servo motor, a planetary reducer 725 is also provided between the ball screw 721 and the servo motor in this embodiment. Furthermore, the displacement component 72 includes two sets of photoelectric limit sensors 73, which are respectively located at the beginning and end of the stroke of the ball screw 721. Additionally, to facilitate the wiring of various electrical devices, a wire groove square tube 711 is provided below the support base 71.

[0064] like Figures 15 to 16 As shown, each set of displacement components 72 is connected to a set of adhesive separation modules 74. The adhesive separation module 74 includes a lifting component and an adhesive separation block 741 connected to the lifting component. The adhesive separation block 741 is provided with an insertion part 7412 that can be inserted between the glue-applying roller 53 and the glue-scraping roller 54. The cross-section of the insertion part 7412 is triangular, as shown in the figure. Figure XAs shown, the insertion part 7412 has a first concave arc-shaped surface 7413 and a second concave arc-shaped surface 7414 on its front and rear sides, respectively. The junction of the first concave arc-shaped surface 7413 and the second concave arc-shaped surface 7414 forms a sharp part, and the left and right sides of the insertion part 7412 form flat surfaces. The insulating module 74 also includes an insulating main seat 742 fixed to the movable seat 722. A first through hole 712 is opened on the lower side of the support seat 71, and the lower side of the insulating main seat 742 is provided with An extension 7421 passes through the first through hole 712 and connects to the movable seat 722. A lifting assembly is mounted on the separator base 742. The lifting assembly includes a connector 746 and a lifting cylinder 743 fixed to the separator base 742. One end of the connector 746 is connected to the lifting cylinder 743, and the other end is connected to the separator block 741. Furthermore, to allow the separator block 741 to be more accurately inserted into the glue roller 53 and scraper... Between the rubber rollers 54, the lifting assembly of this embodiment also includes a fixing member 744, which is fixedly connected to the displacement assembly 72. The connecting member 746 is connected to the lifting cylinder 743 through a spherical bearing 745. The other end of the connecting member 746 away from the lifting cylinder 743 is connected to a fulcrum rotating shaft 747. Specifically, the front end of the connecting member 746 is fixedly connected to the middle position of the fulcrum rotating shaft 747 through a bolt. The two ends of the fulcrum rotating shaft 747 are movably mounted on the fixing member 744. Specifically, a first sliding hole 7441 matching the two ends of the rotating shaft is provided on the front side of the fixing member 744. The two ends of the rotating shaft are sleeved in the first sliding hole 7441. The above-mentioned separator module 74 also includes a connecting arm 7411, one end of which is connected to the separator block 741 and the other end is connected to the fixing member 744. The above-mentioned connecting arm 7411 is provided with a curved part, so as to better cooperate with the operation of the rubber roller 53 and the scraper roller 54.

[0065] The lower preheating mechanism 4 is located at the bottom of the frame 1 and is used to heat the lower corrugated paper. The lower preheating mechanism 4 includes an arc-shaped baking plate 41 and a first guide wheel 42 and a second guide wheel 43 respectively movably mounted on the frame 1. The first guide wheel 42 and the second guide wheel 43 are respectively located on both sides of the arc-shaped baking plate 41. This preheating of the lower corrugated paper improves the bonding effect.

[0066] An infrared light curtain detector 9 is installed on the rack 1.

[0067] Brief description of the working principle of the invention: The invention is illustrated using the production of five-layer corrugated paper as an example, such as... Figures 16 to 17As shown, the upper layer of single-layer corrugated paper 100 is first fed into the top layer preheating mechanism 2. Simultaneously, an infrared light curtain detector 9 mounted on the frame 1 detects the width of the upper layer of single-layer corrugated paper 100. Then, the preheating servo motor 22 drives the preheating cylinder 21 to rotate, causing the upper layer of single-layer corrugated paper 100 to approach the preheating cylinder 21 and move forward as the cylinder rotates. While approaching the preheating cylinder 21, the cylinder simultaneously heats the upper layer of single-layer corrugated paper 100, removing moisture and improving the gluing effect. The preheated upper layer of single-layer corrugated paper 100 is then pushed into the first layer gluing mold by the preheating cylinder 21. Block 3: The upper layer of single-wall corrugated paper 100 first passes through the feed guide roller 64, which acts as a guide. Then, the upper layer of single-wall corrugated paper 100 enters the gluing channel 55 and is output from the output guide roller 65. During operation, depending on the need for single-wall corrugated paper or other types of paper, the switching cylinder 62 can be activated. The switching cylinder 62 drives the transmission component 63 to rotate, causing the pressure roller 67 to move to a position close to the gluing channel 55 and press down on the surface of the upper layer of single-wall corrugated paper 100. This, combined with the feed guide roller and the output guide roller 65, keeps the upper layer of single-wall corrugated paper 100 taut. When the pressure bar 68 needs to be changed for different orders... Simply activate the switching cylinder 62 to rotate the transmission component 63. At this point, the pressure roller 67 rises and moves away from the gluing area, while the pressure bar 68 moves into the working area to press down the corrugated paper, allowing it to be glued. Then, the gluing synchronous motor drives the gluing roller 53 and the scraper roller 54 to rotate, applying glue to the upper layer of single-wall corrugated paper 100 passing through the gluing channel 55. It is important to note that an automatic glue-separating mechanism 7 is installed below the gluing roller 53 and the scraper roller 54. The main function of this mechanism is to prevent glue from overflowing and sticking to the edges of the paper during the gluing process. To reduce water waste, the principle of the automatic gluing mechanism 7 is as follows: the connecting part 746 and the rotating shaft form a lever structure, which can improve the transmission force and make the overall structure more reliable, and will not cause left and right deviation. As shown in the figure, under the joint action of the lifting cylinder and the connecting part 746, the gluing block 741 assembly extends between the glue roller 53 and the scraper roller 54. The first concave arc surface 7413 and the second concave arc surface 7414 are the same as the shape of the glue roller 53 and the scraper roller 54, respectively, so that they can be closer to the glue roller 53 and the scraper roller 54, further restricting the paper 102 or corrugated paper.To accommodate different widths of face paper 102, this embodiment employs a displacement component 72 and a photoelectric limit sensor 73. Specifically, before the face paper 102 or corrugated paper enters the gluing roller 53 for gluing, it is detected by the photoelectric limit sensor 73. The actual width of the detected paper is read and sent to the servo motor. The data detected by the light curtain is compared with the data from the encoder of the drive motor. The servo motor drives the ball screw 721 to transmit torque. The ball screw 721 generates left and right movement power through rotation, causing the moving seat 722 to slide left and right, as shown in the figure. This adjusts the distance between the two separator modules 74. The moving seat 722 is then connected to the separator main seat 742 by bolts. The connecting arm 7411, guided by the cylindrical guide rod 723, allows the adhesive-separating block 741 of the connecting arm 7411 to move left and right, ensuring that the adhesive is the same width as or smaller than the width of the corrugated paper and does not spread or overflow, achieving a no-adhesive-exposed effect. When the cardboard is formed and trimmed by the edge trimming machine, the waste paper generated during trimming will not be wasted due to the adhesive residue. Simultaneously, this structure minimizes the unbalanced forces and torques experienced by the adhesive-separating plate during opening and closing, preventing the adhesive-separating blocks 741 on both sides from forming a V-shape or becoming non-parallel, reducing impact on the equipment and increasing its lifespan. In this embodiment, a scraping mechanism 8 is also provided to scrape off any residual adhesive from the scraping roller 54.

[0068] Meanwhile, the lower single-wall paper 101 passes through the second layer gluing module 3 for gluing. The gluing principle of the second layer gluing module 3 is the same as that of the first layer, so it will not be described in detail. The face paper 102 passes through the lower layer preheating mechanism 4 for preheating, and finally enters the double-sided machine 103 for lamination and shaping.

[0069] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision gluing machine characterized by comprising: The device comprises a rack (1), a top preheating mechanism (2), at least one group of gluing modules (3) and a lower preheating mechanism (4); The top preheating mechanism (2) is arranged on the upper side of the rack (1), and the top preheating mechanism (2) comprises a preheating cylinder (21) for preheating the upper corrugated paper; The gluing module (3) comprises a gluing mechanism (5) for gluing the corrugated paper, a paper pressing quick switching mechanism (6) arranged on the upper side of the gluing mechanism (5) and matched with the gluing mechanism (5), an automatic paste separating mechanism (7) and a glue scraping mechanism (8) matched with the gluing mechanism (5); The paper pressing quick switching mechanism (6) comprises two end plates (61) arranged symmetrically, the two end plates (61) are fixed to the rack (1), a switching cylinder (62) is arranged between the two end plates (61), a transmission member (63) is rotatably arranged on the inner side of the end plate (61), a paper pressing roller (67) and a touch pressure rod (68) are respectively connected to the transmission member (63), the switching cylinder (62) is connected with the transmission member (63), and the paper pressing roller (67) and the touch pressure rod (68) are rotated to replace positions; The paper pressing quick switching mechanism (6) further comprises a paper feeding guide roller (64), a paper discharging guide roller (65) and a water spraying pipe (66), the paper feeding guide roller (64) is arranged on the rack (1), the water spraying pipe (66) is arranged between the two end plates (61), the water spraying pipe (66) is adjacent to the paper feeding guide roller (64), an inclined arm (612) is formed by extending downward and in the opposite direction of the paper feeding guide roller (64) at the other end of the end plate (61) away from the paper feeding guide roller (64), and the paper discharging guide roller (65) is arranged on the inclined arm (612) to form an inclined height difference in dislocation with the paper feeding guide roller (64); The touch pressure rod (68) comprises a touch pressure base (681) and a plurality of touch pressure blocks (682), the two ends of the touch pressure base (681) are fixedly connected with the transmission member (63), and the two ends of the paper pressing roller (67) are rotatably connected with the transmission member (63) through the bearings; the touch pressure block (682) comprises an integral elastic part (6821) and a touch pressure part (6822), the elastic part (6821) is fixedly connected with the touch pressure base (681), the inner side of the touch pressure part (6822) is connected with a limiting piece (6823), a limiting hole (6811) is arranged on the touch pressure base (681), the limiting piece (6823) is inserted into the limiting hole (6811), and a reset spring (6824) is arranged on the limiting piece (6823) and located between the touch pressure part (6822) and the touch pressure base (681); The automatic paste separating mechanism (7) comprises a support seat (71) fixed to the rack (1), displacement assemblies (72) are arranged on the left and right sides of the support seat (71) and face each other, and each group of displacement assemblies (72) is connected with a group of paste separating devices; the paste separating device comprises a lifting assembly and a paste separating block (741) connected with the lifting assembly. The lower preheating mechanism (4) is arranged at the lowermost position of the frame (1) and is used for heating the lower layer of corrugated paper; An infrared light curtain detector (9) is arranged on the frame (1).

2. The high-precision gluing machine according to claim 1, characterized in that, The gluing mechanism (5) comprises a pulp tray (51), a gluing motor (52) fixed to the frame (1), and a gluing roller (53) and a scraping roller (54) connected to the gluing motor (52), and a gluing channel (55) for the corrugated paper is formed between the gluing roller (53) and the scraping roller (54), and the lower side of the gluing roller (53) is arranged in the pulp tray (51).

3. The high-precision gluing machine according to claim 1, characterized in that, The scraping mechanism (8) comprises a scraping main base (81) fixed to the frame (1) and a scraping rotating base (82) arranged on the scraping main base (81), and a scraping blade (83) is arranged on the scraping rotating base, and a scraping communication hole (84) for mounting the scraping rotating base (82) is arranged on the scraping main base (81), and an opening (85) is arranged on one side of the scraping communication hole (84), and a bolt is arranged on the scraping main base (81) to lock the opening (85).

4. The high-precision gluing machine according to claim 3, characterized in that, The transmission member (63) is in a triangular structure as a whole, the paper pressing roller (67), the touch pressure rod (68) and the switching cylinder (62) are respectively connected to three ends of the transmission member (63), a flange bearing is arranged on the end plate (61), and the middle part of the transmission member (63) is connected to the flange bearing to be rotatable.

5. The high-precision gluing machine according to claim 3, characterized in that, A limiting seat (614) is arranged at one end of the end plate (61), a limiting block (6141) extending outward is arranged in the limiting seat (614), and an inclined top surface is arranged on the limiting block (6141).

6. The high-precision gluing machine according to claim 1, characterized in that, The paste separating block (741) is provided with an insertion part (7412), the cross section of the insertion part (7412) is in a triangular structure, a first concave arc surface (7413) and a second concave arc surface (7414) are respectively arranged on the front and back sides of the insertion part (7412), a sharp part is formed at the joint of the first concave arc surface (7413) and the second concave arc surface (7414), and flat surfaces are formed on the left and right sides of the insertion part (7412). The displacement assembly (72) comprises a movable photoelectric limiting sensor (73), a ball screw (721) arranged on the support seat (71), a moving seat (722) connected to the ball screw (721), and a paste separating servo motor (724) connected to the input end of the ball screw (721), and the photoelectric limiting sensor (73) is arranged at the first end and the second end of the stroke of the ball screw (721).

7. The high-precision gluing machine according to claim 6, characterized in that The paste separating device further comprises a paste separating main seat (742) fixed to the moving seat (722), a first through hole (712) is arranged on the lower side of the support seat (71), an extension part (7421) is arranged on the lower side of the paste separating main seat (742), the extension part (7421) passes through the first through hole (712) and is connected to the displacement assembly (72), and the lifting assembly is arranged on the paste separating main seat (742). The lifting assembly further comprises a fixing member (744) fixedly connected with the spacer main base (742), a connecting member (746) connected with the lifting cylinder (743) through a joint bearing (745), and a fulcrum rotating shaft (747) connected with the other end of the connecting member (746) away from the lifting cylinder (743), both ends of the rotating shaft being movably arranged on the fixing member (744); A first sliding hole (7441) matched with both ends of the rotating shaft is arranged on the front side of the fixing member (744), and both ends of the rotating shaft are sleeved in the first sliding hole (7441).

8. The high-precision gluing machine according to claim 1, characterized in that, The top preheating mechanism (2) comprises a preheating cylinder (21) movably arranged on the rack (1), a preheating servo motor (22) for driving the preheating cylinder (21) to rotate, and a top guiding assembly arranged above the preheating cylinder (21). The top guiding assembly comprises a top adjusting motor (23) fixedly arranged on the rack (1), a top adjusting plate (24) connected with the top adjusting motor (23), and two groups of top guiding shafts (25) arranged on both sides of the top adjusting plate (24) respectively.

9. The high-precision gluing machine according to claim 8, characterized in that, The top guiding assembly further comprises an adjusting transmission gear (26) movably arranged between the preheating cylinder (21) and the rack (1), and an adjusting transmission shaft (27) connected with the top adjusting motor (23). Both ends of the adjusting transmission shaft (27) are connected with connecting gears (28) engaged with the adjusting transmission gear (26). The top adjusting plate (24) extends downward to form a fixed connection portion (29) fixedly connected with the adjusting transmission gear (26).

10. The high precision gluing machine according to claim 1, characterized in that, The lower preheating mechanism (4) comprises an arc-shaped drying plate (41) and first and second guide wheels (42) and (43) movably arranged on the rack (1) respectively. The first and second guide wheels (42) and (43) are arranged on both sides of the arc-shaped drying plate (41) respectively.

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