A gluing device for composite paper production

Abstract

The utility model provides a kind of gluing device for composite paper production, it is related to composite paper production technical field, and it includes: gluing machine platform, dust cover is installed on the gluing machine platform upper end surface, glue spraying head is installed on the dust cover upper end inner wall by glue spraying frame, glue spraying head right side is provided with glue roller, glue roller right side end is distributed with glue scraping frame plate, glue scraping frame plate left lower inclined surface is equipped with glue scraping end, high-precision screw rod is connected with the glue scraping frame plate right side by nut block, microwave thick bottom sensor is fixed in the glue scraping frame plate right side wall, waste glue pipe is connected in the glue scraping frame plate right groove wall, glue scraping end upper end is welded with flow guide plate, flow guide plate left upper end is installed with brush cylinder, first spray head and second spray head are respectively installed in the flow guide plate upper end and lower end place.This utility model solves the problem that the glue that plate surface is continuously accumulated is easy to change the contact area of plate body and composite paper surface and affect the uniformity and flatness of gluing layer when thickness adjusting plate continuously scrapes in prior art.

Description

Technical Field

[0001] This utility model relates to the field of composite paper production technology, specifically to a coating device for composite paper production. Background Technology

[0002] Composite paper is made by bonding paper, paperboard, and other materials such as plastics, aluminum foil, and cloth together with adhesives. Composite paper not only improves the appearance and strength of paper and paperboard, but more importantly, enhances properties such as water resistance, moisture resistance, oil resistance, and airtight aroma retention. It also gains heat-sealing properties, light-blocking properties, and heat resistance. Composite paper production requires a coating device. A search revealed an existing technology (publication number: CN202322548263.3) for a coating device in composite paper production. The description states that "by adjusting the components, the adjusting plate is rotated to a vertical position, and then the drive motor drives the lead screw to rotate, causing the lead screw nut to move horizontally through the connecting plate, moving the fixed block and the cleaning block. The cleaning block scrapes off the uncured glue on the adjusting plate, preventing the glue on the adjusting plate from curing overnight and affecting the subsequent adjustment of the adhesive layer thickness on the composite paper." However, in the existing technology, when the thickness adjusting plate continuously scrapes, the constantly accumulating glue on the plate surface can easily change the contact area between the plate and the composite paper surface, affecting the uniformity and smoothness of the coating layer. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a gluing device for composite paper production is provided to solve the problem that in existing technologies, when the thickness adjustment plate is continuously scraped, the glue that accumulates on the board surface can easily change the contact area between the board and the composite paper surface, affecting the uniformity and smoothness of the glue coating layer.

[0004] To achieve the above objectives, a coating apparatus for composite paper production is provided, comprising: a coating machine base, wherein a dust cover is installed on the upper surface of the coating machine base.

[0005] The dust cover has a glue spraying head mounted on its upper inner wall via a glue spraying frame. A glue pressing roller is located on the right side of the glue spraying head. A glue scraping frame is distributed on the right side of the glue pressing roller. The lower left slope of the glue scraping frame is the glue scraping end. A high-precision lead screw is connected to the right side of the glue scraping frame via a nut block. A microwave thick-bottom sensor is fixed to the right side wall of the glue scraping frame. A waste glue tube is connected to the right groove wall of the glue scraping frame. A guide plate is welded to the upper end of the glue scraping end. A brush roller is installed on the upper left end of the guide plate. A first nozzle and a second nozzle are respectively installed at the upper and lower ends of the guide plate.

[0006] Furthermore, a perforated drainage plate is embedded in the table surface of the glue coating machine; and the perforated drainage plate is located at the lower end of the glue scraper frame, with a drain outlet at the lower end of the perforated drainage plate.

[0007] Furthermore, a viewing window is provided on the front end of the dust cover, a control panel is supported on the right outer wall of the dust cover, and a high-precision lead screw is installed on the upper inner wall of the dust cover.

[0008] Furthermore, a servo motor is shafted to the upper end of the high-precision lead screw; and the servo motor is fixedly located on the upper surface of the dust cover, with an alarm installed on the right side of the servo motor.

[0009] Furthermore, the upper inner cavity of the glue spraying frame is connected to a glue supply pipe, the side end of the glue pressing roller is connected to a fixing frame, the front end of the glue pressing roller is connected to a motor, and the upper end of the fixing frame is connected to a dust cover through a hydraulic cylinder.

[0010] Furthermore, a motor is installed on the front end face of the glue scraper frame; and a brush roller is connected to the motor shaft, with the bristles on the left side of the brush roller in contact with the surface of the glue pressing roller.

[0011] Furthermore, the brush bristles on the right side of the brush roller are pressed into contact with a fixing rod; and the fixing rod is welded to the inner wall of the scraper frame plate, and the upper end of the scraper frame plate is connected to the dust cover for limiting through a connecting rod.

[0012] Furthermore, the first and second nozzles are connected to cleaning fluid pipes via branch pipes at their side ends, and a high-speed camera is installed on the inner right side wall of the dust cover.

[0013] The beneficial effects of this utility model are as follows: The coating device for composite paper production utilizes a microwave thickness sensor to scan and measure the thickness of the coating layer in real time after being coated by the scraper frame. A servo motor and high-precision lead screw drive the scraper frame to move up and down, finely adjusting the gap between the blade and the adhesive surface of the composite paper. Excess adhesive is discharged through the scraper frame's guide groove and waste adhesive tube, further improving the coating accuracy and facilitating the collection and removal of excess adhesive during continuous coating, preventing excessive adhesive accumulation and ensuring the uniformity and smoothness of the coating. Furthermore, the cleaning fluid sprayed by the first and second nozzles within the scraper frame cleans and removes residual adhesive, facilitating convenient cleaning of scraper frames that are no longer in use, preventing residual adhesive from hardening and affecting normal coating operation, and reducing the labor intensity of manual cleaning. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the adhesive coating device for composite paper production according to an embodiment of the present invention.

[0015] Figure 2 This is a front cross-sectional view of the coating device for composite paper production according to an embodiment of the present invention.

[0016] Figure 3 This is a front view cross-sectional structural diagram of the glue scraper frame plate according to an embodiment of the present utility model.

[0017] Figure 4 This is a side view of the adhesive scraping frame plate according to an embodiment of the present utility model.

[0018] In the diagram: 1. Glue applicator; 11. Viewing window; 12. Dust cover; 13. Servo motor; 14. High-precision lead screw; 15. Control panel; 16. Perforated drainage plate; 17. Drain outlet; 18. Alarm; 2. Spray nozzle; 21. Spray frame; 22. Glue delivery pipe; 3. Pressure roller; 31. Motor; 32. Fixing frame; 33. Hydraulic cylinder; 4. Scraper frame; 41. Nut block; 42. Microwave thick-bottom sensor; 43. Scraper end; 44. Waste glue pipe; 45. Guide plate; 46. Fixing rod; 47. Motor; 48. Connecting rod; 5. Brush roller; 6. Cleaning liquid pipe; 61. Branch pipe; 62. First nozzle; 63. Second nozzle; 7. High-speed camera. Detailed Implementation

[0019] Reference Figures 1 to 4 As shown, this utility model provides a gluing device for composite paper production, including: a gluing machine 1, with a dust cover 12 installed on the upper surface of the gluing machine 1.

[0020] A glue spraying head 2 is installed on the inner wall of the upper end of the dust cover 12 via a glue spraying frame 21. A glue pressing roller 3 is set on the right side of the glue spraying head 2. A glue scraping frame plate 4 is distributed on the right side of the glue pressing roller 3. The lower left slope of the glue scraping frame plate 4 is set as the glue scraping end 43. A high-precision lead screw 14 is connected to the right side of the glue scraping frame plate 4 via a nut block 41. A microwave thick-bottom sensor 42 is fixed on the right side wall of the glue scraping frame plate 4. A waste glue tube 44 is connected to the right groove wall of the glue scraping frame plate 4. A guide plate 45 is welded to the upper end of the glue scraping end 43. A brush roller 5 is installed on the upper left end of the guide plate 45. A first nozzle 62 and a second nozzle 63 are installed at the upper and lower ends of the guide plate 45, respectively.

[0021] First, the composite paper is introduced from the left side and led out from the right side of the dust cover 12 by the traction setting, so that the glue spray head 2 sprays an appropriate amount of glue onto the surface of the composite paper that has entered the glue coating machine 1. After the glue is sprayed, the composite paper moves to the rotating pressure roller 3, so that the rolling pressure roller 3 holds and spreads the sprayed glue on the paper surface, and then moves to the scraper plate 4 (the scraper plate 4 has been pre-adjusted for the scraping thickness). The scraping end 43 of the scraper plate 4 scrapes off the excess glue from the surface of the composite paper. The excess glue is pushed into the groove of the scraper plate 4 along the inclined scraping end 43. Then, the excess glue in the groove is extracted through the waste glue pipe 44 for recycling. During the scraping process of the scraper plate 4, the brush roller 5 is also rotating clockwise, adsorbing the excess glue on the surface of the pressure roller 3 onto the brush bristles, and then rotating to the fixed rod 46 for squeezing and discharge, and flowing along the guide plate 45 into the groove of the scraper plate 4. During the glue application process, the microwave thickness sensor 42 scans and measures the thickness of the glue layer after it has been scraped by the glue scraper plate 4 in real time. When the thickness exceeds the preset thickness value, the PLC controls the servo motor 13 and the high-precision lead screw 14 to drive the glue scraper plate 4 to move up and down, finely adjusting the gap between the blade and the adhesive surface of the composite paper to ensure the uniformity and flatness of the glue application. After the glue application is completed and the machine is stopped, cleaning fluid is supplied to the nozzle through the cleaning fluid pipe 6 to clean and remove the residual glue inside the glue scraper plate 4, preventing the residual glue from accumulating on the glue scraper plate 4 and becoming difficult to remove.

[0022] In this embodiment, a perforated drainage plate 16 is embedded in the upper surface of the glue coating machine 1; the perforated drainage plate 16 is located at the lower end of the glue scraper frame plate 4, and a drain port 17 is opened at the lower end of the perforated drainage plate 16. A viewing window 11 is provided on the front end face of the dust cover 12, a control panel 15 is supported on the right outer wall of the dust cover 12, and a high-precision lead screw 14 is installed on the upper inner wall of the dust cover 12. A servo motor 13 is shafted to the upper end of the high-precision lead screw 14; and the servo motor 13 is fixedly located on the upper surface of the dust cover 12, and an alarm 18 is installed on the right side of the servo motor 13.

[0023] In a preferred embodiment, the porous drainage plate 16 and the drain port 17 discharge cleaning waste liquid through the drainage holes. The viewing window 11 allows for easy observation of the operating status of the adhesive application mechanism inside the dust cover 12. The control panel 15 is electrically connected to the PLC control terminal, facilitating the setting of the adhesive layer thickness and control of the adhesive application mechanism's operation. The servo motor 13 drives the high-precision lead screw 14 to rotate, causing the nut block 41 to convert the rotational motion of the high-precision lead screw 14 into linear motion, which in turn moves the adhesive scraper frame 4 up and down, achieving the effect of adjusting the adhesive layer thickness. When the high-speed camera 7 or sensor detects a fault or defect, the machine stops and triggers the alarm 18, prompting personnel to perform maintenance.

[0024] In this embodiment, the upper inner cavity of the glue spraying frame 21 is connected to the glue delivery pipe 22, the side end of the glue pressing roller 3 is connected to the fixing frame 32, the front end of the glue pressing roller 3 is connected to the motor 31, and the upper end of the fixing frame 32 is connected to the dust cover 12 through the hydraulic cylinder 33.

[0025] In a preferred embodiment, the glue delivery pipe 22 delivers glue to the glue spray head 2 (using an external glue pump), allowing multiple sets of distributed glue spray heads 2 to spray an appropriate amount of glue onto the surface of the composite paper. The hydraulic cylinder 33 drives the pressure roller 3 to move up and down, adjusting the distance between the roller surface of the pressure roller 3 and the composite paper to a suitable level.

[0026] In this embodiment, a motor 47 is installed on the front end face of the glue scraping frame plate 4; and a brush roller 5 is shaft-connected to the motor 47. The bristles on the left side of the brush roller 5 are in contact with the roller surface of the pressure roller 3. The bristles on the right side of the brush roller 5 are pressed into contact with a fixing rod 46; and the fixing rod 46 is welded to the inner wall of the glue scraping frame plate 4. The upper end of the glue scraping frame plate 4 is limited and connected to the dust cover 12 through a connecting rod 48.

[0027] In a preferred embodiment, the motor 47 drives the brush roller 5 to rotate, rotating the adhesive liquid on the surface of the adhesive roller 3 to the fixed rod 46 for squeezing and discharge. The discharged adhesive liquid flows along the guide plate 45 to the groove of the scraper frame plate 4, and is collected and recycled through the waste adhesive pipe 44.

[0028] In this embodiment, the first nozzle 62 and the second nozzle 63 are connected to the cleaning liquid pipe 6 via the branch pipe 61, and a high-speed camera 7 is installed on the inner right side of the dust cover 12.

[0029] In a preferred embodiment, the first nozzle 62 and the second nozzle 63 are respectively oriented towards the contact surface of the brush roller 5 and the fixed rod 46, and the scraper end 43. This facilitates the spraying of cleaning fluid delivered by the cleaning fluid pipe 6 to rinse the scraper frame plate 4, removing residual adhesive from the scraper frame plate 4, preventing the residual adhesive from solidifying and affecting the normal operation of the adhesive coating process, and reducing the labor intensity of manual cleaning. The high-speed camera 7 uses image processing algorithms to detect defects such as missed coating, bubbles, streaks, and impurities on the coated surface in real time, and feeds the feedback to the PLC controller. When the above defects are detected, the system can be improved by fine-tuning the scraper gap, adjusting the glue pump flow rate, or controlling the amount of adhesive applied by controlling the roller speed. When a major defect is detected, the system will automatically alarm or stop the machine.

[0030] This invention provides a coating device for composite paper production that effectively solves the problem in existing technologies where continuous scraping of the thickness adjustment plate leads to an accumulation of glue on the plate surface, altering the contact area between the plate and the composite paper and affecting the uniformity and smoothness of the coating layer. It further improves the precision of the coating process, facilitates the collection and removal of excess glue during continuous coating, prevents excessive glue accumulation, and ensures the uniformity and smoothness of the coating. It also allows for convenient cleaning of the scraper frame after use, preventing residual glue from hardening and affecting normal coating operation, and reducing the labor intensity of manual cleaning. This invention is suitable for coating devices used in composite paper production.

Claims

1. A coating apparatus for composite paper production, comprising: A glue-applying machine (1), wherein a dust cover (12) is installed on the upper surface of the glue-applying machine (1), characterized in that: The dust cover (12) has a glue spraying head (2) installed on the upper inner wall via a glue spraying frame (21). A glue pressing roller (3) is provided on the right side of the glue spraying head (2). A glue scraping frame plate (4) is distributed on the right side of the glue pressing roller (3). The lower left slope of the glue scraping frame plate (4) is set as the glue scraping end (43). A high-precision lead screw (14) is connected to the right side of the glue scraping frame plate (4) via a nut block (41). A microwave thick-bottom sensor (42) is fixed on the right side wall of the glue scraping frame plate (4). A waste glue tube (44) is connected to the right groove wall of the glue scraping frame plate (4). A guide plate (45) is welded to the upper end of the glue scraping end (43). A brush roller (5) is installed on the upper left end of the guide plate (45). A first nozzle (62) and a second nozzle (63) are respectively installed at the upper and lower ends of the guide plate (45).

2. The adhesive coating device for composite paper production according to claim 1, characterized in that, The upper surface of the glue coating machine (1) is inlaid with a perforated drainage plate (16); and the perforated drainage plate (16) is located at the lower end of the glue scraper frame (4), and the lower end of the perforated drainage plate (16) is provided with a drain outlet (17).

3. The adhesive coating device for composite paper production according to claim 1, characterized in that, The dust cover (12) has a viewing window (11) on its front end, a control panel (15) is supported on the outer right side of the dust cover (12), and a high-precision lead screw (14) is installed on the inner upper side of the dust cover (12).

4. The adhesive coating device for composite paper production according to claim 3, characterized in that, The high-precision lead screw (14) is connected to a servo motor (13) at its upper end; and the servo motor (13) is fixed on the upper surface of the dust cover (12), and an alarm (18) is installed on the right side of the servo motor (13).

5. The adhesive coating device for composite paper production according to claim 1, characterized in that, The glue spraying frame (21) has a glue delivery pipe (22) connected to its upper inner cavity. The glue pressing roller (3) has a fixed frame (32) connected to its side end. The glue pressing roller (3) has a motor (31) connected to its front end shaft. The upper end of the fixed frame (32) is connected to the dust cover (12) through a hydraulic cylinder (33).

6. The adhesive coating device for composite paper production according to claim 1, characterized in that, A motor (47) is installed on the front end face of the glue scraper frame (4); and a brush roller (5) is connected to the motor (47) shaft, and the brush bristles on the left side of the brush roller (5) are in contact with the roller surface of the pressure roller (3).

7. The adhesive coating device for composite paper production according to claim 1, characterized in that, The brush roller (5) has a fixed rod (46) pressed against the right side of the brush bristles; and the fixed rod (46) is welded to the inner wall of the scraper frame (4). The upper end of the scraper frame (4) is connected to the dust cover (12) through the connecting rod (48).

8. The adhesive coating device for composite paper production according to claim 1, characterized in that, The first nozzle (62) and the second nozzle (63) are connected to a cleaning fluid pipe (6) via a branch pipe (61) at their side ends. A high-speed camera (7) is installed on the inner right side of the dust cover (12).

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