PET protective film gluing device

By designing a PET protective film coating device with a glue storage, coating, and drying unit, the problems of uneven coating and inconvenient drying were solved, achieving a highly efficient coating and drying process.

CN224542185UActive Publication Date: 2026-07-24GUANGDONG DONGMEI NEW MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG DONGMEI NEW MATERIALS CO LTD
Filing Date
2025-08-27
Publication Date
2026-07-24

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Abstract

The utility model relates to PET protection film processing technical field, concretely is a kind of PET protection film gluing device, it includes: support frame;Install the material discharging unit in support frame top;Install the film coating unit in support frame top;Install the drying unit in support frame top;Install the material receiving unit in support frame top, this PET protection film gluing device, by setting up glue storage unit, by glue tank, fourth motor and fourth rotating shaft and stirring paddle, can be stirred to glue coating, avoid gluing to be placed agglomerate for a long time, influence its use;By setting up glue coating unit, by glue storage tank, third rotating shaft, glue coating roller and third motor, rotating roller, can evenly glue PET film, improve the practicability of this device;By setting up drying unit, by drying oven and material port, exhaust pump, air duct and air outlet box, electric heating tube. PET film can be dried after gluing, it is convenient to wind, increase the working efficiency of this device.
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Description

Technical Field

[0001] This utility model relates to the field of PET protective film processing technology, specifically to a PET protective film coating device. Background Technology

[0002] PET protective film material is transparent and colorless, and its surface has been hardened. Generally, depending on the place of origin, the surface hardening value of PET protective film material is between 3H and 4H. The better the surface hardening, the stronger its wear resistance. In the production process, it is usually necessary to use an adhesive coating device to continue coating the surface of the PET protective film.

[0003] For example, Chinese utility model patent with publication number "CN215843917U" discloses a coating device for PET protective film production. The device uses a drive motor to rotate a third roller. The PET protective film wrapped on the third roller is then pulled and collected onto the surface of the third roller. The operator only needs to turn on the coating device to perform a comprehensive coating operation on the surface of the PET protective film. This method is more time-saving and labor-saving, improves the efficiency of equipment use, and does not affect the aesthetics of the PET protective film after coating.

[0004] However, the aforementioned patents make it difficult to apply PET protective film evenly and it is inconvenient to dry the applied PET protective film, which requires manual air drying, resulting in low work efficiency. Therefore, we propose a PET protective film coating device. Utility Model Content

[0005] One of the technical problems this application aims to solve is that it is difficult to evenly coat the PET protective film, and it is inconvenient to dry the coated PET protective film, which requires manual air drying, resulting in low work efficiency.

[0006] To address the aforementioned technical problems, this application provides a PET protective film coating device, comprising: a support frame;

[0007] A feeding unit installed on top of the support frame;

[0008] A coating unit mounted on top of a support frame;

[0009] Drying unit mounted on top of the support frame;

[0010] A receiving unit installed on top of the support frame;

[0011] A glue storage unit installed on one side of the support frame;

[0012] The glue storage unit includes a glue tank, a feed pipe welded to the glue tank, a fourth motor mounted on the top of the glue tank, a fourth rotating shaft mounted on the output end of the fourth motor, stirring paddles welded to the surface of the fourth rotating shaft at equal intervals, a guide pipe welded to the surface of the glue tank, and a gate valve installed inside the guide pipe.

[0013] The coating unit includes a glue storage tank, a third rotating shaft is installed inside the glue storage tank, a glue coating roller is installed on the surface of the third rotating shaft, a third motor is installed on the surface of the glue storage tank, and a rotating roller is installed at the output end of the third motor.

[0014] Preferably, one end of the guide tube is connected to the glue storage tank, and the glue storage tank is welded to the top of the support frame.

[0015] Preferably, the feeding unit includes a first motor and a second motor, which are mounted on the top of the support frame. A first rotating shaft is mounted on the output end of the first motor, a first threaded rod is mounted on the output end of the second motor, a first threaded cylinder is threadedly connected to the surface of the first threaded rod, a first connecting frame is mounted on one end of the first threaded cylinder, and a second rotating shaft is mounted on the surface of the first connecting frame. The second rotating shaft and the first rotating shaft are symmetrically arranged. A first slide rail is provided on the surface of the support frame, and a first slider is slidably connected to the surface of the first slide rail. One end of the first slider is connected to the first threaded cylinder.

[0016] Preferably, the receiving unit includes a fifth motor and a sixth motor, which are mounted on the top of the support frame. A fifth rotating shaft is mounted on the output end of the fifth motor, a second threaded rod is mounted on the output end of the sixth motor, a second threaded cylinder is threadedly connected to the surface of the second threaded rod, a second connecting frame is mounted on one end of the second threaded cylinder, and a sixth rotating shaft is mounted on the surface of the second connecting frame. The sixth rotating shaft and the fifth rotating shaft are symmetrically arranged. A second slide rail is provided on the surface of the support frame, and a second slider is slidably connected to the surface of the second slide rail. One end of the second slider is connected to the second threaded cylinder.

[0017] Preferably, the drying unit includes a drying box, material inlets symmetrically opened on both sides of the drying box, an exhaust pump installed on the top of the drying box, an air guide pipe installed on the surface of the exhaust pump, an air outlet box installed at one end of the air guide pipe, and an electric heating tube installed inside the drying box.

[0018] Preferably, the drying chamber is mounted on top of the support frame.

[0019] This utility model has at least the following beneficial effects:

[0020] By setting up a glue storage unit, the glue tank, fourth motor, fourth rotating shaft, and stirring paddle can be used to stir the glue, preventing the glue from clumping due to prolonged storage and affecting its use. By setting up a glue coating unit, the glue tank, third rotating shaft, coating roller, third motor, and rotating roller can be used to coat the PET film evenly, improving the practicality of this device.

[0021] By incorporating a drying unit, which includes a drying chamber and feed inlet, an exhaust pump, an air duct and outlet, and an electric heating element, the coated PET film can be dried, facilitating its winding and increasing the device's efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 3 This is a frontal cross-sectional view of the present invention.

[0025] Figure 4 This is a schematic diagram of the first side view structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the second side view structure of this utility model.

[0027] In the diagram: 1. Support frame; 2. First motor; 201. First rotating shaft; 202. Second motor; 203. First threaded rod; 204. First threaded cylinder; 205. First slide rail; 206. First slider; 207. First connecting frame; 208. Second rotating shaft; 3. Glue storage tank; 301. Third rotating shaft; 302. Glue application roller; 303. Third motor; 304. Rotating roller; 4. Glue tank; 401. Feed pipe; 402. Fourth motor; 403. 404. Fourth rotating shaft; 405. Stirring paddle; 406. Feed guide pipe; 407. Gate valve; 508. Drying box; 501. Feed inlet; 502. Exhaust pump; 503. Air guide pipe; 504. Air outlet box; 505. Electric heating tube; 606. Fifth motor; 607. Fifth rotating shaft; 608. Sixth motor; 609. Second threaded rod; 6000. Second threaded cylinder; 601. Second slide rail; 6000. Second slider; 601. Second connecting frame; 602. Sixth rotating shaft. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-5 This utility model provides a technical solution: a PET protective film coating device, comprising: a support frame 1;

[0030] A feeding unit installed on top of support frame 1;

[0031] A coating unit mounted on top of support frame 1;

[0032] A drying unit installed on top of support frame 1;

[0033] A receiving unit installed on top of support frame 1;

[0034] The glue storage unit is installed on one side of the support frame 1.

[0035] Please see Figures 2-3 The glue storage unit includes a glue tank 4, a feed pipe 401 welded to the glue tank 4, a fourth motor 402 mounted on the top of the glue tank 4, a fourth rotating shaft 403 mounted on the output end of the fourth motor 402, stirring paddles 404 welded to the surface of the fourth rotating shaft 403 at equal intervals, a guide pipe 405 welded to the surface of the glue tank 4, and a gate valve 406 installed inside the guide pipe 405. The coating unit includes a glue storage tank 3, a third rotating shaft 301 installed inside the glue storage tank 3, a coating roller 302 mounted on the surface of the third rotating shaft 301, a third motor 303 mounted on the surface of the glue storage tank 3, a rotating roller 304 mounted on the output end of the third motor 303, and an ear end of the guide pipe 405 connected to the glue storage tank 3. The glue storage tank 3 is welded to the top of the support frame 1.

[0036] Through the above technical solution, the adhesive is introduced into the glue tank 4 through the feed pipe. The fourth motor 402 drives the fourth rotating shaft 403 to rotate, causing the stirring paddle 404 to rotate and stir the adhesive to prevent the adhesive from settling or clumping. Then, the gate valve 406 is opened through the feed pipe 405 to introduce the adhesive into the glue storage tank 3. The PET film passes through the coating roller 302 and the rotating roller 304. The third motor 303 drives the rotating roller 304 to rotate, which in turn causes the coating roller 302 to rotate in conjunction with the third rotating shaft 301. The coating roller 302 adheres the adhesive inside the glue storage tank 3 to its surface by rotating. The PET film is coated with adhesive by the coating roller 302.

[0037] Please see Figures 1-4The feeding unit includes a first motor 2 and a second motor 202, which are mounted on the top of the support frame 1. A first rotating shaft 201 is mounted on the output end of the first motor 2, a first threaded rod 203 is mounted on the output end of the second motor 202, a first threaded cylinder 204 is threadedly connected to the surface of the first threaded rod 203, a first connecting frame 207 is mounted on one end of the first threaded cylinder 204, and a second rotating shaft 208 is mounted on the surface of the first connecting frame 207. The second rotating shaft 208 and the first rotating shaft 201 are symmetrically arranged. A first slide rail 205 is provided on the surface of the support frame 1, and a first slider 206 is slidably connected to the surface of the first slide rail 205. One end of the first slider 206 is connected to the first threaded cylinder 204.

[0038] The above technical solution involves inserting one end of the PET film roller to be coated with adhesive into the surface of the first rotating shaft 201. The second motor 202 rotates the first threaded rod 203, causing the first threaded cylinder 204 to move. This, in conjunction with the first slide rail 205 and the first slider 206, moves the first connecting frame 207, causing the second rotating shaft 208 to move to the other end of the PET film roller. The first motor 2 drives the first rotating shaft 201 to rotate, and in conjunction with the second rotating shaft 208, the PET film roller is fed.

[0039] Please see Figures 1-5 The receiving unit includes a fifth motor 6 and a sixth motor 602, which are mounted on the top of the support frame 1. A fifth rotating shaft 601 is mounted on the output end of the fifth motor 6. A second threaded rod 603 is mounted on the output end of the sixth motor 602. A second threaded cylinder 604 is threadedly connected to the surface of the second threaded rod 603. A second connecting frame 607 is mounted on one end of the second threaded cylinder 604. A sixth rotating shaft 608 is mounted on the surface of the second connecting frame 607. The sixth rotating shaft 608 and the fifth rotating shaft 601 are symmetrically arranged. A second slide rail 605 is provided on the surface of the support frame 1. A second slider 606 is slidably connected to the surface of the second slide rail 605. One end of the second slider 606 is connected to the second threaded cylinder 604.

[0040] The above technical solution involves inserting one end of the collecting roller into the surface of the fifth rotating shaft 601, driving the second threaded rod 603 to rotate via the sixth motor 602, causing the second threaded cylinder 604 to move, and cooperating with the second slide rail 605 and the second slider 606 to move the second connecting frame 607. The sixth rotating shaft 608 is then inserted into the other end of the collecting roller, and the PET film is wound around the surface of the take-up roller. The fifth rotating shaft 601 is driven to rotate via the fifth motor 6, cooperating with the sixth motor 602 to rotate the take-up roller, thereby winding up the coated PET film.

[0041] Please see Figures 2-3The drying unit includes a drying box 5, material inlets 501 symmetrically opened on both sides of the drying box 5, an exhaust pump 502 installed on the top of the drying box 5, an air guide pipe 503 installed on the surface of the exhaust pump 502, an air outlet box 504 installed at one end of the air guide pipe 503, and an electric heating tube 505 installed inside the drying box 5. The drying box 5 is installed on the top of the support frame 1.

[0042] Using the above technical solution, the coated PET film enters the drying chamber 5 through the feed port 501. The exhaust pump 502, together with the air guide pipe 503, provides air to the air outlet box 504. The air is sprayed out through the air outlet box 504 and heated by the electric heating tube 505 before being blown onto the PET film to dry it.

[0043] All electrical devices in this invention are powered by an external power source;

[0044] Working principle and usage process: One end of the PET film roller to be coated is inserted into the surface of the first rotating shaft 201. The second motor 202 rotates the first threaded rod 203, causing the first threaded cylinder 204 to move. This, in conjunction with the first slide rail 205 and the first slider 206, moves the first connecting frame 207, causing the second rotating shaft 208 to move to the other end of the PET film roller. The first motor 2 drives the first rotating shaft 201 to rotate, cooperating with the second rotating shaft 208 to feed the PET film roller. The coating is then introduced into the glue tank 4 through the feed pipe. The fourth motor 402 drives the fourth rotating shaft 403 to rotate, causing the stirring paddle 404 to rotate and stir the coating, preventing sedimentation or clumping. Then, through the guide pipe 405, the gate valve 406 is opened, allowing the coating to enter the glue storage tank 3. The PET film passes through the coating roller 302 and the rotating roller 304. The third motor 303 drives the rotating roller 304 to rotate, cooperating with the third rotating shaft 301 to move the coating roller 302... 2. The coating roller 302 rotates to adhere the glue inside the glue storage tank 3 to its surface. The PET film is coated with glue by the coating roller 302. The coated PET film enters the drying chamber 5 through the feed port 501. The exhaust pump 502 and the air guide pipe 503 provide air to the air outlet box 504. The air is sprayed out through the air outlet box 504 and heated by the electric heating tube 505 before being blown onto the PET film to dry it. Then, one end of the collecting roller is inserted into the surface of the fifth rotating shaft 601. The sixth motor 602 drives the second threaded rod 603 to rotate, causing the second threaded cylinder 604 to move. With the cooperation of the second slide rail 605 and the second slider 606, the second connecting frame 607 moves. The sixth rotating shaft 608 is inserted into the other end of the collecting roller, and the PET film is wound around the surface of the take-up roller. The fifth motor 6 drives the fifth rotating shaft 601 to rotate, and with the cooperation of the sixth motor 602, the take-up roller rotates to wind up the coated PET film.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PET protective film coating device, characterized in that, include: Support frame (1); The feeding unit is installed on the top of the support frame (1); A coating unit installed on top of the support frame (1); A drying unit installed on top of the support frame (1); A receiving unit installed on top of the support frame (1); A glue storage unit installed on one side of the support frame (1); The glue storage unit includes a glue tank (4), a feed pipe (401) welded to the glue tank (4), a fourth motor (402) mounted on the top of the glue tank (4), a fourth rotating shaft (403) mounted on the output end of the fourth motor (402), a stirring paddle (404) welded to the surface of the fourth rotating shaft (403) at equal intervals, a guide pipe (405) welded to the surface of the glue tank (4), and a gate valve (406) installed inside the guide pipe (405). The coating unit includes a glue storage tank (3), a third rotating shaft (301) is installed inside the glue storage tank (3), a glue coating roller (302) is installed on the surface of the third rotating shaft (301), a third motor (303) is provided on the surface of the glue storage tank (3), and a rotating roller (304) is installed at the output end of the third motor (303).

2. The PET protective film coating device according to claim 1, characterized in that: One end of the guide tube (405) is connected to the glue storage box (3), which is welded to the top of the support frame (1).

3. The PET protective film coating device according to claim 1, characterized in that: The feeding unit includes a first motor (2) and a second motor (202), which are mounted on the top of the support frame (1). A first rotating shaft (201) is mounted on the output end of the first motor (2), a first threaded rod (203) is mounted on the output end of the second motor (202), a first threaded cylinder (204) is threadedly connected to the surface of the first threaded rod (203), a first connecting frame (207) is mounted on one end of the first threaded cylinder (204), and a second rotating shaft (208) is mounted on the surface of the first connecting frame (207). The second rotating shaft (208) and the first rotating shaft (201) are symmetrically arranged. A first slide rail (205) is provided on the surface of the support frame (1), and a first slider (206) is slidably connected to the surface of the first slide rail (205). One end of the first slider (206) is connected to the first threaded cylinder (204).

4. The PET protective film coating apparatus according to claim 1, characterized in that: The receiving unit includes a fifth motor (6) and a sixth motor (602), which are installed on the top of the support frame (1). A fifth rotating shaft (601) is installed at the output end of the fifth motor (6), a second threaded rod (603) is installed at the output end of the sixth motor (602), a second threaded cylinder (604) is threadedly connected to the surface of the second threaded rod (603), a second connecting frame (607) is installed at one end of the second threaded cylinder (604), and a sixth rotating shaft (608) is installed on the surface of the second connecting frame (607). The sixth rotating shaft (608) and the fifth rotating shaft (601) are symmetrically arranged. A second slide rail (605) is provided on the surface of the support frame (1), and a second slider (606) is slidably connected to the surface of the second slide rail (605). One end of the second slider (606) is connected to the second threaded cylinder (604).

5. The PET protective film coating apparatus according to claim 1, characterized in that: The drying unit includes a drying box (5), symmetrically arranged material inlets (501) on both sides of the drying box (5), an exhaust pump (502) installed on the top of the drying box (5), an air duct (503) installed on the surface of the exhaust pump (502), an air outlet box (504) installed at one end of the air duct (503), and an electric heating tube (505) installed inside the drying box (5).

6. The PET protective film coating apparatus according to claim 5, characterized in that: The drying box (5) is installed on top of the support frame (1).