A film substrate coating machine

Abstract

The utility model relates to the field of film coating device discloses a kind of film base material coating machine, including scraper and base, the base upper side is fixedly connected with organism, the organism left side outer wall is rotatably connected with transmission roller, the organism upper side outer wall is fixedly connected with fixed frame, the fixed frame left side is fixedly connected with spray head, the fixed frame middle outer wall is provided with lifting assembly, the scraper outer wall is connected in the fixed frame outer wall lower side by lifting assembly, the organism middle outer wall is fixedly connected with heating room, the heating room upper side outer wall is provided with fan, the organism right side outer wall is provided with motor, the organism right side outer wall is fixedly connected with support frame, the support frame outer wall is provided with extrusion component. In the utility model, through worm gear and gear rack composite transmission, realize the accurate and convenient adjustment of scraper height;Rely on bevel gear transmission and self-adapting structure, drive extrusion roller symmetrical extrusion, effectively eliminate film wrinkle, adapt different thickness demand.

Description

Technical Field

[0001] This utility model relates to the field of thin film coating equipment, and in particular to a thin film substrate coating machine. Background Technology

[0002] As a core piece of equipment in film production and processing in packaging, electronics, and building materials industries, film substrate coating machines form a uniform functional coating on the film surface through processes such as spraying, leveling, and air drying, directly affecting the performance and quality of the finished film. With downstream industries continuously increasing their requirements for diverse film product specifications, coating uniformity, and surface smoothness, the adjustment flexibility, adaptability, and wrinkle-resistant effect of coating machines have become key indicators for evaluating equipment performance. The market urgently needs coating equipment that can simultaneously meet the needs of multi-specification production and high-quality finished product output.

[0003] In practical applications, existing film substrate coating machines often rely on disassembling and recalibrating the scraper to adjust the coating thickness. This process is cumbersome, time-consuming, and prone to errors, making it difficult to guarantee adjustment accuracy. It also fails to quickly adapt to the production needs of different coating thicknesses, significantly limiting production efficiency, especially in small-batch, multi-batch production scenarios. Regarding film wrinkle prevention, existing equipment often uses a fixed-gap extrusion mechanism, which is difficult to adapt to films of different thicknesses. Furthermore, the connection between the transmission structure and the elastic adjustment mechanism is not perfect. When the film undergoes thermal expansion and contraction during heating and drying, the fixed-gap extrusion rollers are prone to damage or incomplete wrinkle prevention due to improper pressure, resulting in insufficient flatness of the finished product and a lower yield rate.

[0004] In response to this technical problem, this application proposes a thin film substrate coating machine. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a film substrate coating machine. This machine achieves precise and convenient adjustment of the scraper height through a worm gear and rack and pinion combined transmission. Relying on bevel gear transmission and an adaptive structure, it drives the extrusion rollers to symmetrically extrude the film, effectively eliminating film wrinkles and adapting to different thickness requirements.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A thin film substrate coating machine includes a scraper and a base. A body is fixedly connected to the upper side of the base. A transmission roller is rotatably connected to the left outer wall of the body. A fixed frame is fixedly connected to the upper outer wall of the body. A nozzle is fixedly connected to the left side of the fixed frame. A lifting assembly is provided on the middle outer wall of the fixed frame. The outer wall of the scraper is connected to the lower side of the outer wall of the fixed frame through the lifting assembly. A heating chamber is fixedly connected to the middle outer wall of the body. A fan is provided on the upper outer wall of the heating chamber. A motor is provided on the right outer wall of the body. A support frame is fixedly connected to the right outer wall of the body. An extrusion assembly is provided on the outer wall of the support frame.

[0007] Furthermore, the extrusion assembly includes a rotating rod rotatably connected inside the support frame on the right side. A third bevel gear is fixedly connected to the lower end of the rotating rod. A fourth bevel gear is meshed with the left outer wall of the third bevel gear. The outer wall of the fourth bevel gear is fixedly connected to the rotating end of the motor. A first extrusion roller is fixedly connected to the left outer wall of the fourth bevel gear.

[0008] Furthermore, the lifting assembly includes a sliding rod slidably connected to the inner wall of the fixed frame, the outer wall of the scraper is fixedly connected to the bottom end of the sliding rod, and a rack is fixedly connected to the left outer wall of the sliding rod.

[0009] Furthermore, a first bevel gear is slidably connected to the upper outer wall of the rotating rod, an L-shaped plate is rotatably connected to the outer wall of the first bevel gear, a second bevel gear is rotatably connected to the left outer wall of the L-shaped plate, a second extrusion roller is fixedly connected to the left end of the second bevel gear, and the outer wall of the second extrusion roller is slidably connected to the outer wall of the left side of the support frame.

[0010] Furthermore, a spring is sleeved on the upper outer wall of the rotating rod, and the outer wall of the spring is disposed on the upper side of the L-shaped plate.

[0011] Furthermore, a transmission gear is meshed with the outer wall of the rack, the outer wall of the transmission gear is rotatably connected to the inside of the fixed frame, and a worm gear is fixedly connected to the front outer wall of the transmission gear.

[0012] Furthermore, a worm is meshed with the outer wall of the left side of the worm gear, and a knob is fixedly connected to the upper end of the worm.

[0013] Furthermore, a bearing is fixedly connected to the outer wall of the sliding rod, and the outer wall of the bearing is fixedly connected to the inner side of the upper side of the fixing frame.

[0014] This utility model has the following beneficial effects: In this invention, a combination of worm gear and rack and pinion transmission structure allows for smooth adjustment of the scraper height simply by turning a knob. No parts disassembly is required, making operation convenient and efficient. It flexibly adapts to the coating needs of products with different specifications, effectively solving the problems of cumbersome adjustment and insufficient precision in traditional equipment. Simultaneously, the self-locking characteristic of the worm gear firmly locks the scraper position, preventing height deviation due to vibration or external force during coating, ensuring uniform coating thickness, significantly improving product quality stability, expanding the equipment's applicability, and meeting the needs of small-batch, multi-batch production.

[0015] In this invention, a bevel gear transmission drives two sets of upper and lower extrusion rollers to rotate synchronously in opposite directions, forming a symmetrical extrusion on the air-dried film. This effectively eliminates wrinkles caused by thermal expansion and contraction, enhancing the adhesion between the coating and the substrate. Combined with an adaptive structure consisting of springs and an L-shaped plate, the height of the extrusion rollers automatically adjusts according to changes in film thickness, maintaining a suitable extrusion pressure. This avoids film damage caused by excessive pressure and prevents wrinkle-resistant failure due to insufficient pressure. Simultaneously, it ensures continuous and stable engagement of the transmission system, guaranteeing a smooth surface finish for films of varying thicknesses and improving the product yield. Attached Figure Description

[0016] Figure 1 This is a perspective view of a thin film substrate coating machine proposed in this utility model; Figure 2 This is a schematic diagram of the motor structure of a thin film substrate coating machine proposed in this utility model; Figure 3 This is a schematic diagram of the transmission gear structure of a thin film substrate coating machine proposed in this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0017] Legend: 1. Fan; 2. Heating chamber; 3. Knob; 4. Mounting frame; 5. Nozzle; 6. Drive roller; 7. Machine body; 8. Support frame; 9. Motor; 10. Base; 11. Bearing; 12. Worm gear; 13. Scraper; 14. Worm wheel; 15. Rack; 16. Drive gear; 17. First bevel gear; 18. Rotating rod; 19. Spring; 20. Second bevel gear; 21. L-shaped plate; 22. Third bevel gear; 23. Fourth bevel gear; 24. First extrusion roller; 25. Second extrusion roller; 26. Sliding rod. 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] Reference Figures 1-3 An embodiment of this utility model provides a film substrate coating machine, including a scraper 13 and a base 10. A body 7 is fixedly connected to the upper side of the base 10. A transmission roller 6 is rotatably connected to the left outer wall of the body 7. A fixing frame 4 is fixedly connected to the upper outer wall of the body 7. A nozzle 5 is fixedly connected to the left side of the fixing frame 4. A sliding rod 26 is provided on the middle outer wall of the fixing frame 4. The outer wall of the scraper 13 is fixedly connected to the bottom end of the sliding rod 26. A rack 15 is fixedly connected to the left outer wall of the sliding rod 26. The outer wall of the scraper 13 is connected to the lower side of the outer wall of the fixed frame 4 via a lifting assembly. The heating chamber 2 is fixedly connected to the middle outer wall of the machine body 7. A fan 1 is installed on the upper outer wall of the heating chamber 2. A motor 9 is installed on the right outer wall of the machine body 7. A support frame 8 is fixedly connected to the right outer wall of the machine body 7. A rotating rod 18 is installed on the outer wall of the support frame 8. A third bevel gear 22 is fixedly connected to the lower end of the rotating rod 18. A fourth bevel gear 23 is meshed with the left outer wall of the third bevel gear 22. The outer wall of the fourth bevel gear 23 is fixedly connected to the rotating end of the motor 9. A first extrusion roller 24 is fixedly connected to the left outer wall of the fourth bevel gear 23.

[0020] Specifically, when using the device, the film is placed on the left side and passed through the transmission roller 6. The spray nozzle 5 performs the spraying operation, and the scraper 13 disperses the paint evenly. Then, it passes through the heating chamber 2 on the right side. After being heated and dried inside for a few seconds, it is ready. Traditional devices cannot rotate to apply the coating thickness, and after drying and heating, the film may expand and wrinkle. Therefore, a squeezing device is needed to help stabilize the film. First, motor 9 drives the fourth bevel gear 23 and the first extrusion roller 24 to rotate, which in turn drives the third bevel gear 22 and the rotating rod 18 to rotate. The first bevel gear 17 is slidably connected to the outer wall of the fourth bevel gear 23 and is rotatably connected to the L-shaped plate 21. The L-shaped plate 21 is rotatably connected to the outer first bevel gear 17, keeping the third bevel gear 22 meshing with the L-shaped plate 21. When the thickness of the inner film is small, the upper spring 19 will push the L-shaped plate 21 to slide downward, causing the second extrusion roller 25 to move downward, thereby adapting to the size of the film thickness and fitting the film surface as closely as possible. Rotating knob 3 drives the worm gear 12 to rotate, thereby causing the worm wheel 14 and the transmission gear 16 to rotate. Relying on the meshing relationship between the transmission gear 16 and the rack 15, the scraper 13 can slide up and down. And relying on the effect of the worm wheel 14 and the worm gear 12, the self-locking effect of the device is maintained, thereby adjusting the coating thickness of the device.

[0021] Reference Figure 3 and Figure 4 A first bevel gear 17 is slidably connected to the upper outer wall of the rotating rod 18. An L-shaped plate 21 is rotatably connected to the outer wall of the first bevel gear 17. A second bevel gear 20 is rotatably connected to the left outer wall of the L-shaped plate 21. A second extrusion roller 25 is fixedly connected to the left end of the second bevel gear 20. The outer wall of the second extrusion roller 25 is slidably connected to the outer wall of the left support frame 8. A spring 19 is sleeved on the upper outer wall of the rotating rod 18. The outer wall of the spring 19 is located on the upper side of the L-shaped plate 21. A transmission gear 16 is meshed with the outer wall of the rack 15. The outer wall of the transmission gear 16 is rotatably connected to the inside of the fixed frame 4. A worm gear 14 is fixedly connected to the front outer wall of the transmission gear 16. A worm 12 is meshed with the left outer wall of the worm gear 14. A knob 3 is fixedly connected to the upper end of the worm 12. A bearing 11 is fixedly connected to the outer wall of the worm 12. The outer wall of the bearing 11 is fixedly connected to the upper inside of the fixed frame 4.

[0022] Specifically, the first bevel gear 17 on the upper side of the rotating rod 18 is rotatably connected to the L-shaped plate 21, and together with the second bevel gear 20 on the left side of the L-shaped plate 21, forms a bevel gear transmission assembly. This assembly transmits the rotational power of the rotating rod 18 to the second extrusion roller 25, causing the second extrusion roller 25 to rotate synchronously with the first extrusion roller 24, achieving symmetrical extrusion of the upper and lower sides of the film and improving the anti-wrinkle effect. The sliding fit between the L-shaped plate 21 and the rotating rod 18, along with the elastic support of the spring 19, constitutes an adaptive adjustment structure: when the film thickness changes, the spring 19 pushes the second bevel gear 20 and the second extrusion roller 25 up and down through the L-shaped plate 21, ensuring that the second extrusion roller 25 always adheres to the film surface, while maintaining stable meshing between the first bevel gear 17 and the second bevel gear 20, preventing transmission interruption. The meshing of rack 15 and transmission gear 16, combined with the transmission of worm wheel 14 and worm 12, forms a speed reduction and force amplification structure: when knob 3 drives worm 12 to rotate, the worm wheel 14 reduces the speed and drives transmission gear 16 to rotate, thereby driving rack 15 and sliding rod 26 to rise and fall smoothly. This improves the accuracy of scraper 13 height adjustment and utilizes the self-locking characteristics of worm 12 and worm wheel 14 to prevent accidental displacement of scraper 13. The bearing 11 on the outer wall of worm 12 is fixed inside the fixed frame 4, which reduces the frictional resistance when worm 12 rotates, ensuring smooth transmission, and also provides radial positioning for worm 12.

[0023] Working principle: When the coating thickness needs to be adjusted, turn knob 3. Knob 3 drives worm gear 12 to rotate under the support of bearing 11. Worm gear 12 meshes with worm wheel 14, causing worm wheel 14 to drive transmission gear 16 to rotate synchronously. Since transmission gear 16 meshes with rack 15, rack 15 drives sliding rod 26 up and down as transmission gear 16 rotates, thereby adjusting the height of scraper 13. At the same time, the meshing of worm gear 12 and worm wheel 14 has a self-locking characteristic, which can prevent scraper 13 from shifting position due to external force or vibration during operation, ensuring stable coating thickness. After motor 9 starts, its rotating end drives fourth bevel gear 23 and first extrusion roller 24 to rotate. Fourth bevel gear 23 meshes with third bevel gear 22, driving rotating rod 18 to rotate. Rotating rod 18 drives first bevel gear 17 to rotate synchronously. First bevel gear 17 meshes with second bevel gear 20, transmitting power to second extrusion roller 25, causing second extrusion roller 25 to rotate synchronously in the opposite direction to first extrusion roller 24. When the film thickness changes, the spring 19 applies elastic pressure to the second bevel gear 20 and the second extrusion roller 25 through the L-shaped plate 21, pushing the second extrusion roller 25 to slide along the left support frame 8, always keeping it in contact with the film surface, while ensuring that the first bevel gear 17 and the second bevel gear 20 continue to mesh, so as to achieve stable extrusion of films of different thicknesses and eliminate wrinkles.

[0024] The circuits and protections involved in the above embodiments are all based on the actual situation and adopt the corresponding existing technologies. Therefore, they will not be described in detail in the embodiments of this application.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A film substrate coating machine, characterized in that, The machine includes a scraper (13) and a base (10). The upper side of the base (10) is fixedly connected to the body (7). The outer left wall of the body (7) is rotatably connected to a transmission roller (6). The upper outer wall of the body (7) is fixedly connected to a fixed frame (4). The left side of the fixed frame (4) is fixedly connected to a nozzle (5). The middle outer wall of the fixed frame (4) is provided with a lifting component. The outer wall of the scraper (13) is connected to the lower side of the outer wall of the fixed frame (4) through the lifting component. The middle outer wall of the body (7) is fixedly connected to a heating chamber (2). The upper outer wall of the heating chamber (2) is provided with a fan (1). The right outer wall of the body (7) is provided with a motor (9). The right outer wall of the body (7) is fixedly connected to a support frame (8). The outer wall of the support frame (8) is provided with an extrusion component.

2. The film substrate coating machine according to claim 1, characterized in that: The extrusion assembly includes a rotating rod (18) rotatably connected inside the support frame (8) on the right side. A third bevel gear (22) is fixedly connected to the lower end of the rotating rod (18). A fourth bevel gear (23) is meshed with the outer wall of the left side of the third bevel gear (22). The outer wall of the fourth bevel gear (23) is fixedly connected to the rotating end of the motor (9). A first extrusion roller (24) is fixedly connected to the outer wall of the left side of the fourth bevel gear (23).

3. A thin film substrate coating machine according to claim 1, characterized in that: The lifting assembly includes a sliding rod (26) slidably connected to the inner wall of the fixed frame (4), the outer wall of the scraper (13) is fixedly connected to the bottom end of the sliding rod (26), and a rack (15) is fixedly connected to the left outer wall of the sliding rod (26).

4. A thin film substrate coating machine according to claim 2, characterized in that: The upper outer wall of the rotating rod (18) is slidably connected to a first bevel gear (17), the outer wall of the first bevel gear (17) is rotatably connected to an L-shaped plate (21), the left outer wall of the L-shaped plate (21) is rotatably connected to a second bevel gear (20), the left end of the second bevel gear (20) is fixedly connected to a second extrusion roller (25), and the outer wall of the second extrusion roller (25) is slidably connected to the outer wall of the support frame (8) on the left side.

5. A thin film substrate coating machine according to claim 4, characterized in that: A spring (19) is sleeved on the upper outer wall of the rotating rod (18), and the outer wall of the spring (19) is set on the upper side of the L-shaped plate (21).

6. A thin film substrate coating machine according to claim 3, characterized in that: The outer wall of the rack (15) is meshed with a transmission gear (16), the outer wall of the transmission gear (16) is rotatably connected to the inside of the fixed frame (4), and a worm gear (14) is fixedly connected to the front outer wall of the transmission gear (16).

7. A thin film substrate coating machine according to claim 6, characterized in that: The worm gear (14) is meshed with a worm (12) on the outer left side, and a knob (3) is fixedly connected to the upper end of the worm (12).

8. A film substrate coating machine according to claim 7, characterized in that: The outer wall of the worm (12) is fixedly connected to a bearing (11), and the outer wall of the bearing (11) is fixedly connected to the upper inside of the fixing frame (4).

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