Gluing device for acrylic protective film preparation

Abstract

The utility model discloses a gluing device for acrylic protective film preparation, which comprises a working table and a protective cover fixed above the working table, a feed port is reserved on one side of the protective cover, a discharge port is reserved on the other side of the protective cover, a spraying assembly is arranged in the protective cover and close to the feed port, and the spraying assembly is arranged on the working table. A curing assembly is arranged at the position, close to the discharging opening, in the protective cover, a leveling assembly is further arranged in the protective cover, and the leveling assembly is located between the spraying assembly and the curing assembly. According to the gluing device for acrylic protective film preparation, residual glue at the glue spraying head is cleaned through the arranged cleaning assembly, and the cleaning device can be stopped and cleaned at any time along with the working state of the gluing device, so that residual glue at the glue spraying head is reduced, and the glue is prevented from being gathered for a long time to block the glue spraying head; and meanwhile, the cleaned coagulum can be collected in the glue solution cleaning process, the glue solution coagulum is prevented from falling onto the workbench to affect gluing, and the preparation quality of the protective film is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of membrane preparation technology, specifically to a coating device for preparing acrylic protective films. Background Technology

[0002] Acrylic adhesive, also known as plexiglass adhesive, is a malleable polymer material with good transparency, chemical stability, and weather resistance. It is also easy to dye and process. Applying acrylic adhesive to a PET substrate and then curing it can produce a protective film. However, during the adhesive coating process, some adhesive residue may remain at the nozzle. Prolonged accumulation and solidification of the residue can clog the nozzle, affecting the coating process. Currently, cleaning the residue requires removing the nozzle. Since spraying machines typically have multiple nozzles, disassembling and cleaning the residual adhesive is inefficient and labor-intensive, leading to shortcomings in the protective film preparation process. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a coating device for preparing acrylic protective film. The device uses a cleaning component to clean the residual adhesive at the spray nozzle. The cleaning device can clean the adhesive as the coating device stops working, reducing the amount of adhesive residue at the spray nozzle and preventing the adhesive from accumulating and clogging the spray nozzle for a long time. At the same time, the solidified adhesive can be collected during the cleaning process to prevent the solidified adhesive from falling onto the worktable and affecting the coating, thus ensuring the quality of the protective film preparation and effectively solving the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a coating device for preparing acrylic protective film, comprising a worktable, a protective cover fixed above the worktable, with an inlet reserved on one side of the protective cover and an outlet reserved on the other side of the protective cover, a spraying component disposed inside the protective cover near the inlet, a curing component disposed inside the protective cover near the outlet, and a leveling component disposed inside the protective cover, with the leveling component located between the spraying component and the curing component.

[0005] The spraying assembly includes a mounting base, a spraying box, a spray nozzle, and a glue inlet tube. The mounting base is fixed to the top of the inner cavity of the protective cover. The spraying box is fixed on the mounting base. The spray nozzle is installed on the side of the spraying box and communicates with the inner cavity of the spraying box. Several groups of spray nozzles are evenly arranged. One end of the glue inlet tube is fixed to the side of the spraying box and communicates with the inner cavity of the spraying box. A cleaning component for cleaning residual glue on the outside of the spray nozzle is slidably arranged on the side of the mounting base.

[0006] As a preferred embodiment of the present invention, the cleaning assembly includes a slidably disposed collection box with an open top. A cleaning frame is fixed to the upper part of the inner cavity of the collection box, and the side of the cleaning frame contacts the spray nozzle.

[0007] As a preferred technical solution of this utility model, a positioning guide rail is fixed on the side of the mounting base, a movable frame is slidably arranged in the positioning guide rail, the movable frame is connected and positioned to the collection box by a positioning pin, and a driving component for driving the movable frame to move is provided inside the protective cover.

[0008] As a preferred embodiment of this utility model, the drive assembly includes a servo motor mounted on the side of the protective cover, a drive screw mounted on the output shaft of the servo motor, and a threaded cylinder mounted on the side of the moving frame, the threaded cylinder being threadedly connected to the drive screw.

[0009] As a preferred technical solution of this utility model, the leveling component includes an air jet box, an air pump, and a connecting pipe. The air jet box is fixed to the lower side of the protective cover, and an air jet port communicating with its inner cavity is opened on the side of the air jet box. The air jet port is set towards the workbench. The connecting pipe is fixed on the protective cover, and one end of the connecting pipe is located inside the protective cover and communicates with the inner cavity of the air jet box. The other end of the connecting pipe is located outside the protective cover and communicates with the air outlet of the air pump. The air pump is fixed on the upper side of the protective cover.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The adhesive coating device for preparing acrylic protective film according to this utility model has a cleaning component to clean the residual adhesive at the spray nozzle. The cleaning device can clean the adhesive as the coating device stops working, reducing the amount of adhesive residue at the spray nozzle and preventing the adhesive from accumulating and clogging the spray nozzle for a long time. At the same time, the solidified material cleaned during the adhesive cleaning process can be collected to prevent the solidified adhesive from falling onto the worktable and affecting the coating, thus ensuring the quality of the protective film preparation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a front view structural diagram of the present utility model;

[0014] Figure 3 This is a schematic diagram of the structure of this utility model after the workbench has been removed;

[0015] Figure 4 for Figure 4 A cross-sectional view of the protective shield.

[0016] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Workbench, 2. Protective cover, 3. Mounting base, 4. Spray box, 5. Spray nozzle, 6. Glue inlet pipe, 7. Positioning guide rail, 8. Moving frame, 9. Threaded cylinder, 10. Drive screw, 11. Servo motor, 12. Collection box, 13. Cleaning rack, 14. Positioning pin, 15. Curing component, 16. Air jet box, 17. Air pump, 18. Connecting pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5 This utility model provides a technical solution: an adhesive coating device for preparing acrylic protective film, including a worktable 1. During the preparation of the protective film, a PET substrate is placed on the worktable 1. The PET substrate can be conveyed by a conveying device on the worktable 1, or the PET substrate can be driven to move on the worktable 1 by a winding device. A protective cover 2 is fixed above the worktable 1, with a feed port reserved on one side and a discharge port reserved on the other side. The protective cover 2 is used to protect the PET substrate during adhesive coating, reduce the influence of the external environment on the PET substrate, and ensure the coating quality. The feed port facilitates the entry of the PET substrate into the protective cover 2 for adhesive coating. After the protective film is prepared, it is removed from the protective cover 2 through the discharge port.

[0020] A spraying assembly is installed inside the protective cover 2 near the inlet. The spraying assembly includes a mounting base 3, a spraying box 4, a spray nozzle 5, and a glue inlet pipe 6. The mounting base 3 is fixed to the top of the inner cavity of the protective cover 2. The spraying box 4 is fixed on the mounting base 3. The spray nozzle 5 is installed on the side of the spraying box 4 and communicates with the inner cavity of the spraying box 4. Several sets of spray nozzles 5 are evenly arranged. One end of the glue inlet pipe 6 is fixed to the side of the spraying box 4 and communicates with the inner cavity of the spraying box 4. Acrylic adhesive is transported into the spraying box 4 through the glue inlet pipe 6. The adhesive entering the spraying box 4 is sprayed onto the PET substrate through the spray nozzle 5 to prepare a protective film.

[0021] A cleaning assembly for cleaning residual adhesive on the outside of the spray nozzle 5 is slidably provided on the side of the mounting base 3. The cleaning assembly includes a slidably disposed collection box 12 with an open top. A cleaning frame 13 is fixed to the upper part of the inner cavity of the collection box 12. The side of the cleaning frame 13 contacts the spray nozzle 5. By sliding the collection box 12, the cleaning frame 13 contacts the multiple spray nozzles 5 on the collection box 12 in sequence. The cleaning frame 13 cleans the residual solidified adhesive on the spray nozzle 5, preventing the adhesive from accumulating and solidifying for a long time and clogging the spray nozzle 5. This facilitates the preparation of the protective film. During the cleaning process, the collection box 12 collects the solidified adhesive that has been cleaned, preventing the solidified adhesive from falling onto the workbench 1 and affecting the preparation of the protective film.

[0022] The mounting base 3 has a positioning guide rail 7 fixed on its side. A movable frame 8 is slidably arranged inside the positioning guide rail 7. The movable frame 8 is connected and positioned to the collection box 12 by a positioning pin 14. The protective cover 2 has a drive component that drives the movable frame 8 to move. The drive component drives the movable frame 8 to slide inside the positioning guide rail 7. The movable frame 8 drives the collection box 12 to move so that the cleaning frame 13 can clean the solidified glue residue on the spray nozzle 5. The positioning pin 14 is detachable, so that the collection box 12 can be removed from the movable frame 8 for cleaning.

[0023] The drive assembly includes a servo motor 11 mounted on the side of the protective cover 2. A drive screw 10 is mounted on the output shaft of the servo motor 11. A threaded cylinder 9 is mounted on the side of the moving frame 8. The threaded cylinder 9 is threadedly connected to the drive screw 10. The servo motor 11 controls the operation of the drive screw 10, which drives the threaded cylinder 9 to move. The threaded cylinder 9 then drives the moving frame 8 to move, facilitating the use of the cleaning assembly.

[0024] A curing component 15 is installed inside the protective cover 2 near the discharge port. The curing component 15 includes, but is not limited to, a metal halide lamp or a high-pressure mercury lamp. The curing component 15 cures the sprayed adhesive, which facilitates the preparation of the protective film. The protective cover 2 also has a leveling component, which is located between the spraying component and the curing component 15. The leveling component is used for leveling after the adhesive is sprayed to ensure the quality of the protective film preparation.

[0025] The leveling assembly includes an air jet box 16, an air pump 17, and a connecting pipe 18. The air jet box 16 is fixed to the lower side of the protective cover 2, and an air jet port communicating with its inner cavity is opened on the side of the air jet box 16. The air jet port is set towards the worktable 1. The connecting pipe 18 is fixed on the protective cover 2, and one end of the connecting pipe 18 is located inside the protective cover 2 and communicates with the inner cavity of the air jet box 16. The other end of the connecting pipe 18 is located outside the protective cover 2 and communicates with the air outlet of the air pump 17. The air pump 17 is fixed on the upper side of the protective cover 2. The air pump 17 is controlled to work, and air is drawn from the outside by the air pump 17. The air drawn by the air pump 17 enters the air jet box 16 through the connecting pipe 18. The air entering the air jet box 16 is sprayed out through the air jet port. The sprayed airflow performs leveling treatment on the adhesive sprayed on the PET substrate. Preferably, a filter element is provided at the air inlet of the air pump 17 to filter the air drawn by the air pump 17.

[0026] The curing component 15 and the vacuum pump 17 used in this utility model are common electronic components in the prior art. Their working methods and circuit structures are known technologies. The operation of the curing component 15, the vacuum pump 17 and other electronic components is controlled by setting a switch group or a PLC controller. This method is a common technical solution used by technicians and will not be described in detail here.

[0027] This adhesive coating device for preparing acrylic protective film uses a cleaning component to clean residual adhesive at the spray nozzle. The cleaning component can clean the adhesive as the coating device stops working, reducing adhesive residue at the spray nozzle and preventing it from accumulating and clogging the nozzle over time. At the same time, the device can collect the solidified adhesive residue during the cleaning process to prevent it from falling onto the worktable and affecting the coating process, thus ensuring the quality of the protective film preparation.

[0028] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coating apparatus for preparing acrylic protective film, comprising a worktable (1), characterized in that: The protective cover (2) is fixed above the workbench (1), and a feed inlet is reserved on one side of the protective cover (2) and a discharge outlet is reserved on the other side of the protective cover (2). A spraying component is provided inside the protective cover (2) near the feed inlet, and a curing component (15) is provided inside the protective cover (2) near the discharge outlet. A leveling component is also provided inside the protective cover (2), and the leveling component is located between the spraying component and the curing component (15). The spraying assembly includes a mounting base (3), a spraying box (4), a spray nozzle (5), and a glue inlet pipe (6). The mounting base (3) is fixed to the top of the inner cavity of the protective cover (2). The spraying box (4) is fixed on the mounting base (3). The spray nozzle (5) is installed on the side of the spraying box (4) and communicates with the inner cavity of the spraying box (4). Several sets of spray nozzles (5) are evenly arranged. One end of the glue inlet pipe (6) is fixed to the side of the spraying box (4) and communicates with the inner cavity of the spraying box (4). A cleaning component for cleaning residual glue on the outside of the spray nozzle (5) is slidably arranged on the side of the mounting base (3).

2. The adhesive coating apparatus for preparing acrylic protective film according to claim 1, characterized in that: The cleaning assembly includes a slidably disposed collection box (12), with the top of the collection box (12) being open. A cleaning frame (13) is fixed to the upper part of the inner cavity of the collection box (12), and the side of the cleaning frame (13) contacts the spray nozzle (5).

3. The adhesive coating apparatus for preparing acrylic protective film according to claim 2, characterized in that: The mounting base (3) is fixed with a positioning guide rail (7) on its side. A movable frame (8) is slidably arranged inside the positioning guide rail (7). The movable frame (8) is connected and positioned to the collection box (12) by a positioning pin (14). A driving component for driving the movable frame (8) to move is provided inside the protective cover (2).

4. The adhesive coating apparatus for preparing acrylic protective film according to claim 3, characterized in that: The drive assembly includes a servo motor (11) mounted on the side of the protective cover (2), a drive screw (10) mounted on the output shaft of the servo motor (11), and a threaded cylinder (9) mounted on the side of the moving frame (8), the threaded cylinder (9) being threadedly connected to the drive screw (10).

5. The adhesive coating apparatus for preparing acrylic protective film according to claim 1, characterized in that: The leveling assembly includes a jet box (16), an air pump (17), and a connecting pipe (18). The jet box (16) is fixed to the lower side of the protective cover (2), and the side of the jet box (16) is provided with a jet port communicating with its inner cavity. The jet port is set facing the workbench (1). The connecting pipe (18) is fixed on the protective cover (2), and one end of the connecting pipe (18) is located inside the protective cover (2) and communicates with the inner cavity of the jet box (16). The other end of the connecting pipe (18) is located outside the protective cover (2) and communicates with the air outlet of the air pump (17). The air pump (17) is fixed on the upper side of the protective cover (2).

Images