Film coating device

Abstract

The utility model discloses a film coating device which comprises a coating supporting table, a workbench is fixedly connected to the end of the coating supporting table, a tension control device is fixedly installed at one end of the workbench, and a film coating structure is installed in the middle of the coating supporting table through bolts. By installing the tension control device, when a technician observes that wrinkles, bubbles and the like appear on the surface of a film or tension sensors near the film coating mechanism and the drying mechanism exceed a set range, the height of the adjusting roller can be adjusted through a motor on a threaded rod, and then the tension of the film is monitored and adjusted in real time; the hot-air blower is mounted, so that the coated film can be dried, the adhesion of the film in the winding roller is avoided, and the arranged temperature sensor and the exhaust fan can be used for cooling and controlling the temperature according to the temperature in the coating shell, so that the coating uniformity is improved. And the quality of the film is prevented from being influenced by over-high temperature.

Description

Technical Field

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

[0002] The main function of high-barrier film coating is to improve the barrier properties of the film, prevent the penetration of substances such as oxygen and water vapor, thereby extending the shelf life of the packaged contents. The coating of high-barrier special films is carried out by a coating device.

[0003] The prior art, disclosed in patent document CN217989811U, presents the following technical solution: a thin-film silicone oil coating mechanism, comprising a worktable, a fixed frame mounted on one side of the outer wall of the top of the worktable, an adjustment mechanism provided on the inner wall of the fixed frame, and an oiling mechanism provided on the outer wall of the fixed frame near the adjustment mechanism. The thin-film silicone oil coating mechanism disclosed in this utility model enables simultaneous replenishment of silicone oil and oiling, allowing for immediate use and stopping without waste, and resulting in more thorough and uniform coating.

[0004] The above technical solution coats the conveyed film with an oiling mechanism, but it does not have a structure for adjusting the film tension. This results in uneven film tension during the coating process, leading to uneven coating thickness and affecting film quality. In addition, the coated film is directly wound up by a collecting roller, causing the undried film to stick together or deform, further affecting the film quality. Utility Model Content

[0005] The purpose of this invention is to provide a thin film coating device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a thin film coating device, comprising a coating support platform, a worktable fixedly connected to the upper end of the coating support platform, a tension control device fixedly installed at one end of the worktable, and a thin film coating structure bolted to the middle of the coating support platform.

[0007] The tension control device includes a perforated upright plate, which is fixedly connected to the front and rear sides of one end of the workbench. A perforated mounting plate is fixedly connected to one end of the outer side of each of the two perforated upright plates. A threaded rod is provided at one end of the groove of each perforated mounting plate through a bearing. A guide rod is fixedly connected to the other end of the groove of each perforated mounting plate. An adjusting plate is sleeved between the threaded rod and the guide rod. The inner wall of one end of the adjusting plate is threadedly connected to the outer wall of the threaded rod. The inner wall of the other end of the adjusting plate is slidably connected to the outer wall of the guide rod. An adjusting roller is rotatably connected between the front and rear adjusting plates.

[0008] In the above technical solution, the motor on the threaded rod adjusts the height of the adjusting roller, thereby monitoring and adjusting the film tension in real time to avoid tension causing film stretching and deformation, thus improving the uniformity of film coating.

[0009] The film coating structure includes a coating shell. The coating shell has mounting frames on both the upper and lower sides at the end away from the adjusting roller. A filter screen is installed on the top side of the upper mounting frame by rivets. A hot air blower is arranged and installed inside the upper mounting frame. An exhaust fan is arranged and installed on the bottom side of the lower mounting frame.

[0010] The above technical solution can dry the coated film and prevent the film from sticking together in the take-up roller.

[0011] As a further preferred embodiment of this technical solution, a conveying roller is rotatably connected to a groove at one end of the worktable and below the adjusting roller.

[0012] As a further preferred embodiment of this technical solution, both ends of the coated outer shell are provided with film grooves, and the height of the film grooves is lower than that of the adjusting roller.

[0013] As a further preferred embodiment of this technical solution, a paint tank plate is provided in the groove of the workbench, a coating roller is rotatably connected above the paint tank plate, the coating roller is connected to the drive mechanism, and the coating roller contacts the liquid level line of the paint tank plate below.

[0014] As a further preferred embodiment of this technical solution, a paint tank is provided at the top of the coating shell, and a conveying pipe is provided at the outlet of the paint tank through the pump body. A valve is provided on the conveying pipe, and the other end of the conveying pipe passes through the top side of the coating shell and extends to the top of the paint tank plate.

[0015] As a further preferred embodiment of this technical solution, auxiliary rollers are rotatably connected to both the upper and lower ends of the inner side of the film tank, with the bottom side of the upper auxiliary roller being flush with the upper surface of the coating roller.

[0016] In the above technical solution, the coating in the coating tank is uniformly coated onto the surface of the film by a coating roller.

[0017] As a further preferred embodiment of this technical solution, a temperature sensor is provided at the top of the inside of the coated outer shell, and the temperature sensor is connected to the control system signal.

[0018] In the above technical solution, the temperature sensor and exhaust fan can cool down the film according to the temperature inside the coated shell, control the temperature, and prevent the temperature from being too high and affecting the quality of the film.

[0019] This invention provides a thin film coating device, which has the following beneficial effects:

[0020] (1) By installing a tension control device, when technicians observe wrinkles, bubbles or other phenomena on the surface of the film, or when the tension sensor near the film coating mechanism or drying mechanism exceeds the set range, the height of the adjusting roller can be adjusted by the motor on the threaded rod, thereby monitoring and adjusting the film tension in real time, avoiding tension from causing the film to stretch or deform, thereby improving the uniformity of film coating.

[0021] (2) By installing a hot air blower, the coated film can be dried, avoiding film sticking in the winding roller. The temperature sensor and exhaust fan can cool down the film according to the temperature inside the coating shell, control the temperature, and avoid the film quality being affected by excessive temperature. 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 cross-sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of the tension control device of this utility model;

[0025] Figure 4 This is an enlarged view of Figure A of this utility model;

[0026] In the diagram: 1. Coating support platform; 11. Workbench; 12. Conveyor roller; 2. Thin film coating structure; 21. Coating shell; 211. Thin film tank; 212. Auxiliary roller; 213. Temperature sensor; 22. Paint tank; 23. Feed pipe; 24. Paint tank plate; 25. Coating roller; 26. Mounting frame; 27. Hot air blower; 28. Filter screen; 29. ​​Exhaust fan; 3. Tension control device; 31. Perforated vertical plate; 32. Perforated mounting plate; 33. Threaded rod; 34. Guide rod; 35. Adjusting plate; 36. Adjusting roller. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] This utility model provides a technical solution: such as Figure 1 and Figure 2As shown, in this embodiment, a thin film coating apparatus includes a coating support platform 1. A worktable 11 is fixedly connected to the upper end of the coating support platform 1. A conveying roller 12 is rotatably connected to a groove at one end of the worktable 11, located below the adjusting roller 36. Thin film grooves 211 are provided at both ends of the coating housing 21, and the height of the thin film grooves 211 is lower than that of the adjusting roller 36. A paint trough plate 24 is provided in the groove of the worktable 11. A discharge channel is provided at the rear end of the paint trough plate 24, and a valve is provided on the discharge channel to discharge or replace the remaining paint. A coating roller 25 is rotatably connected above the paint trough plate 24 and is connected to a drive mechanism. The lower part of the coating roller 25 contacts... The coating tank 24 reaches the liquid level line. A coating tank 22 is installed at the top of the coating shell 21. A conveying pipe 23 is installed at the outlet of the coating tank 22 through the pump body. A valve is installed on the conveying pipe 23. The other end of the conveying pipe 23 passes through the top side of the coating shell 21 and extends to the top of the coating tank 24. The upper and lower ends of the inner side of the film tank 211 are rotatably connected to auxiliary rollers 212. The bottom side of the upper auxiliary roller 212 is flush with the upper surface of the coating roller 25. The coating in the coating tank 24 is evenly coated on the film surface by the coating roller 25. A collection tank is opened next to the coating tank 24 to collect the dripping coating. The coating is then discharged through the discharge pipe and valve at the bottom of the collection tank for recycling.

[0029] like Figure 2 As shown, a thin film coating structure 2 is bolted to the center of the coating support platform 1. The thin film coating structure 2 includes a coating housing 21. Mounting frames 26 are provided on both the upper and lower sides of the end of the coating housing 21 furthest from the adjusting roller 36. A filter screen 28 is installed on the top side of the upper mounting frame 26 via rivets. A hot air blower 27 is installed inside the upper mounting frame 26, and an exhaust fan 29 is installed on the bottom side of the lower mounting frame 26. A temperature sensor 213 is installed at the top inside the coating housing 21. The temperature sensor 213 is connected to the control system signal. The temperature sensor 213 converts temperature changes into electrical signals through a temperature-sensing element (such as a thermistor or thermocouple). These signals are then transmitted to the analog input circuit of the control system via signal lines, thereby realizing temperature detection and control. By installing the hot air blower 27, the coated film can be dried, preventing film adhesion in the take-up roller. Furthermore, the temperature sensor 213 and exhaust fan 29 can cool down the coating housing 21 according to its internal temperature, preventing excessive temperature from affecting the film quality. The temperature sensor 213 is a type K thermocouple, suitable for thin film coating.

[0030] like Figure 3 and Figure 4As shown, a tension control device 3 is fixedly installed at one end of the workbench 11. The tension control device 3 includes a perforated vertical plate 31, which is fixedly connected to the front and rear sides of one end of the workbench 11. A perforated mounting plate 32 is fixedly connected to one end of the outer side of each of the two perforated vertical plates 31. A threaded rod 33 is provided at one end of the groove of the perforated mounting plate 32 through a bearing. A guide rod 34 is fixedly connected to the other end of the groove of the perforated mounting plate 32. An adjusting plate 35 is sleeved between the threaded rod 33 and the guide rod 34. The inner wall of one end of the adjusting plate 35 is threadedly connected to the outer wall of the threaded rod 33, and the inner wall of the other end of the adjusting plate 35 is connected to the guide rod. The outer walls of 34 are all slidably connected, and the front and rear adjustment plates 35 are rotatably connected to the adjustment roller 36. By installing the tension control device 3, when the technician observes wrinkles, bubbles or other phenomena on the film surface, or when the tension sensor near the film coating mechanism or drying mechanism exceeds the set range, the tension sensor model is FlexiForce series, which is commonly used for tension monitoring of lightweight materials such as film and paper. The height of the adjustment roller 36 can be adjusted by the motor on the threaded rod 33, thereby monitoring and adjusting the film tension in real time, avoiding tension from causing film stretching and deformation, and thus improving the uniformity of film coating.

[0031] This utility model provides a thin film coating device, the specific working principle of which is as follows: the film is pulled to the inside of the conveying roller 12 by the unwinding mechanism, then pulled to the upper surface of the adjusting roller 36, and enters the coating housing 21 through the auxiliary roller 212 until it comes out from the other end of the auxiliary roller 212; when coating the film, the drive mechanism on the coating roller 25 can be activated to make it rotate. Since the lower surface of the coating roller 25 contacts the coating material, it is evenly coated on the surface of the film. Part of the dripping coating material enters the coating tank plate 24, and the other part drips into the collection tank, and is subsequently discharged and recycled through the pipeline. When the film enters the drying chamber, the coated film is dried by the hot air blower 27. During the process, the temperature sensor 213 and the exhaust fan 29 can cool the interior until the film passes through the auxiliary roller 212 at the other end and is wound up. When the technician observes wrinkles, bubbles or other phenomena on the surface of the film, or if the tension sensor near the film coating mechanism or drying mechanism exceeds the set range, the motor on the threaded rod 33 can drive the threaded rod 33 to rotate, so that the adjusting plates 35 on both sides pull the adjusting roller 36 to adjust the height, thereby avoiding tension from causing the film to stretch or deform.

[0032] 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 film coating device comprising a coating support table (1), characterized in that: The coating support table (1) is fixedly connected with a workbench (11) at the upper end, one end of the workbench (11) is fixedly installed with a tension control device (3), and the coating support table (1) is bolted with a film coating structure (2) at the middle part. The tension control device (3) comprises hollow vertical plates (31) fixedly connected to the front and rear sides of one end of the workbench (11), hollow mounting plates (32) fixedly connected to one end of the outer sides of the two hollow vertical plates (31), threaded rods (33) provided at one end of the grooves of the hollow mounting plates (32) through bearings, guide rods (34) fixedly connected to the other end of the grooves of the hollow mounting plates (32), adjusting plates (35) sleeved between the threaded rods (33) and the guide rods (34), one end of the adjusting plates (35) being threadedly connected with the outer walls of the threaded rods (33), and the other end of the adjusting plates (35) being slidingly connected with the outer walls of the guide rods (34), and adjusting rollers (36) being rotatably connected between the adjusting plates (35). The film coating structure (2) comprises a coating shell (21), mounting frames (26) are arranged on the upper and lower sides of one end of the coating shell (21) away from the adjusting roller (36), a filter screen (28) is arranged on the top side of the upper mounting frame (26) through rivets, a hot air blower (27) is arranged in the upper mounting frame (26), and an exhaust fan (29) is arranged in the lower mounting frame (26).

2. A thin film coating apparatus as defined in claim 1, characterized in that The workbench (11) is rotatably connected with a conveying roller (12) in the groove at one end and below the adjusting roller (36).

3. A thin film coating apparatus as defined in claim 1, wherein: Film grooves (211) are formed in the coating shell (21), and the film grooves (211) are lower than the height of the adjusting roller (36).

4. The thin film coating apparatus of claim 1, wherein: A coating groove plate (24) is arranged in the groove of the workbench (11), a coating roller (25) is rotatably connected above the coating groove plate (24), the coating roller (25) is connected with a driving mechanism, and the coating roller (25) contacts the liquid level line of the coating groove plate (24) below.

5. The thin film coating apparatus of claim 1, wherein: A coating tank (22) is arranged at the top end of the coating shell (21), a feeding pipe (23) is arranged at the discharge port of the coating tank (22) through a pump body, a valve is arranged on the feeding pipe (23), and the other end of the feeding pipe (23) penetrates through the top side of the coating shell (21) and extends above the coating groove plate (24).

6. A thin film coating apparatus as defined in claim 3, wherein: Auxiliary rollers (212) are rotatably connected to the upper and lower ends of the inner side of the film groove (211), and the bottom side of the upper auxiliary roller (212) is flush with the upper surface of the coating roller (25).

7. The thin film coating apparatus of claim 1, wherein: A temperature sensor (213) is arranged at the top end of the inside of the coating shell (21), and the temperature sensor (213) is signal-connected with a control system.

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