A PET release film coating machine

Abstract

This utility model relates to the field of coating machine technology, specifically a PET release film coating machine, including a base, scrapers, and a lifting assembly. The lifting assembly is installed at the top of the base, and a spraying assembly for uniformly coating the PET film during use is provided on the inner front of the lifting assembly. There are at least two scrapers, both located inside the lifting assembly and inclined towards one side of the base. The top of each scraper has an adjustment mechanism for layering the material coated on the PET film during use. This utility model arranges the bottom ends of multiple scrapers in a stepped manner through the adjustment mechanism. After spraying by the spraying assembly, the force generated by the PET film conveyed by the base, combined with the scrapers, causes the stepped scrapers to guide and scrape the coating material layer by layer, reducing the thickness of each scraping, decreasing scraping resistance, ensuring uniform coating, and improving coating effect and product quality.

Description

Technical Field

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

[0002] PET release film is a commonly used material in heat transfer printing. The substrate is PET, which is coated with silicone oil, so it is also called silicone oil film.

[0003] Chinese patent document CN222586986U discloses a high-performance PET release film coating machine with a uniform coating structure. It achieves a better and finer coating effect by scraping the coating that has been initially scraped off by the first scraper with a second scraper. The use of a self-cleaning mechanism makes the PET release film forming effect even better.

[0004] However, in the above scheme, the second scraper is arranged perpendicular to the moving direction of the PET release film. When scraping, the material will be pushed against the side of the second scraper and move on the PET release film along the length of the scraper. This causes the material in the middle of the PET release film to drive the edge material to move, resulting in the loss of edge material, affecting the coating uniformity and product quality. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a PET release film coating machine.

[0006] The technical solution of this utility model is: a PET release film coating machine, including a base, a scraper and a lifting assembly;

[0007] The lifting assembly is installed on the top of the base, and the inner front of the lifting assembly is provided with a spraying assembly for uniformly coating the PET film during use.

[0008] The number of scrapers is at least two. Both scrapers are located inside the lifting assembly and are inclined toward one side of the base. The top of the scrapers is provided with an adjustment mechanism for scraping the material coated on the PET film in layers by the two scrapers during use.

[0009] Preferably, the discharge pipe is installed on the side of the base and communicates with the base, and the end of the discharge pipe is provided with a filter for filtering the coating material.

[0010] Preferably, a cavity and a container are respectively provided at the top of the base and below the scraper and the spraying assembly, the cavity and the container are connected, and the container is connected to the discharge pipe.

[0011] Preferably, the bottom inner sides of both the cavity and the container are inclined, with the bottom of the cavity inclined toward the container and the bottom of the container inclined toward the discharge pipe.

[0012] Preferably, the lifting assembly includes a telescopic rod, a connecting plate, a housing, and a mounting plate;

[0013] The housing is mounted on top of the base;

[0014] There are two telescopic rods, both of which are located at the top of the housing and extend to the inside of the housing at the bottom, perpendicular to the housing.

[0015] The mounting plate and connecting plate are respectively installed at the bottom of the telescopic rod and located inside the housing.

[0016] Preferably, the spraying assembly includes a connecting pipe, a main pipe, and a spray nozzle;

[0017] The main pipe is installed at the bottom of the mounting plate;

[0018] The connecting pipe is installed in the middle of the main pipe and extends to the top of the housing to connect with an external conveying device via a hose to deliver coating material into the main pipe;

[0019] There are multiple nozzles, which are arranged at equal intervals on the end of the main pipe.

[0020] Preferably, the main pipe is U-shaped, and the nozzles are located on the lower end faces of both sides of the main pipe, with the nozzles on both sides of the main pipe arranged in an alternating pattern.

[0021] Preferably, a baffle is provided at the bottom of the connecting plate, and the baffle is fitted and connected to the side of the scraper.

[0022] Preferably, the adjusting mechanism includes a connecting rod, a lead screw, a nut, and a fixing rod;

[0023] The number of fixing rods is at least two, and the fixing rods are set at the top of the scraper and the top of the scraper extends upward toward the connecting plate;

[0024] The connecting rod is installed at the top of the fixed rod;

[0025] The nut is located in the middle of the connecting rod;

[0026] The lead screw is inserted into the inside of the nut and connected to the connecting plate.

[0027] Preferably, the scraper includes a blade head and a blade body;

[0028] The blade is located at the bottom of the connecting plate or the fixing rod;

[0029] The blade head is mounted at the bottom of the blade and is angled towards the side of the blade.

[0030] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0031] This invention arranges multiple scrapers in a stepped manner at their bottom ends through an adjustment mechanism. After the coating component sprays the coating, the force generated by the PET film conveyed by the base cooperates with the scrapers to guide and scrape the coating material layer by layer, thereby reducing the thickness of each scraping, reducing scraping resistance, ensuring uniform coating layer, and improving coating effect and product quality. Attached Figure Description

[0032] Figure 1-2 All of these are perspective views of one embodiment of the present utility model.

[0033] Figure 3 This is a schematic diagram of the base structure in one embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of the spraying component structure in one embodiment of the present invention.

[0035] Figure 5 This is a schematic diagram of the scraper mounting structure in one embodiment of the present invention.

[0036] Figure 6 This is a schematic diagram of the adjustment mechanism structure in one embodiment of the present invention.

[0037] Reference numerals: 1. Base; 2. Adjustment mechanism; 21. Connecting rod; 22. Lead screw; 23. Nut; 24. Fixing rod; 3. Scraper; 31. Blade head; 32. Blade body; 4. Telescopic rod; 5. Discharge pipe; 6. Filter; 7. Connecting pipe; 8. Connecting plate; 9. Baffle; 10. Housing; 11. Main pipe; 12. Nozzle; 13. Mounting plate; 14. Cavity; 15. Container. Detailed Implementation

[0038] Example 1

[0039] like Figure 1-6 As shown, the PET release film coating machine proposed in this utility model includes a base 1, a scraper 3, a discharge pipe 5, and a lifting assembly;

[0040] The lifting assembly is installed at the top of the base 1. The inner front of the lifting assembly is provided with a spraying assembly for uniformly coating the PET film in use. The spraying assembly is connected to an external conveying device to convey coating material to the PET film.

[0041] The number of scrapers 3 is at least two. Both scrapers 3 are arranged inside the lifting assembly and behind the spraying assembly. The two scrapers 3 are respectively inclined towards one side of the base 1. They are used to move the material coated on the PET film from one side to the other side or one side, so that the cooperation of the two scrapers 3 can evenly coat the PET film with the coating material, thereby improving the processing quality of the PET film. The top of the scraper 3 is provided with an adjustment mechanism 2 for adjusting the height of the scraper 3 in use and for scraping the material coated on the PET film in layers.

[0042] The discharge pipe 5 is installed on the side of the base 1 and communicates with the base 1. The end of the discharge pipe 5 is provided with a filter 6 for filtering the coating material.

[0043] In this embodiment, the PET film is conveyed through the base 1. During the conveying process, the lifting component adjusts the height of the spraying component and the scraper 3, and the position of the scraper 3 is adjusted by the adjusting mechanism 2 so that the two scrapers 3 are placed in a stepped manner. At the same time, the spraying component is connected to the external conveying device and sprays the coating material onto the PET film. Simultaneously, the front scraper 3 of the two scrapers 3 guides and scrapes off the top of the coating material on the PET film to one side, reducing the thickness of the coating material. At the same time, the rear scraper 3 guides and scrapes off the remaining coating material to the other side, ensuring that the coating layer is uniform and of moderate thickness, so that the coating material forms a uniform coating on the PET film. At the same time, the scraped coating material is discharged to the outside of the base 1 through the discharge pipe 5. Meanwhile, the filter 6 filters the discharged material, so that the coating material can be conveyed to the spraying component for reuse.

[0044] Example 2

[0045] like Figure 3 As shown, the present invention proposes a PET release film coating machine. Compared with the first embodiment, the difference is that a cavity 14 and a container 15 are respectively provided at the top of the base 1 and below the scraper 3 and the spraying assembly. The cavity 14 and the container 15 are connected, and the container 15 is connected to the discharge pipe 5.

[0046] In an optional embodiment, the inner bottom ends of both the cavity 14 and the container 15 are inclined, with the bottom end of the cavity 14 inclined toward the container 15 and the bottom end of the container 15 inclined toward the discharge pipe 5, for guiding the material in the container 15 into the cavity 14 and conveying the material in the cavity 14 to the discharge pipe 5.

[0047] In this embodiment, the material scraped off by the scraper 3 is collected by the cavity 14, and the excess material generated during the spraying process of the spraying assembly is collected by the cavity 15. The bottom ends of the cavity 14 and the cavity 15 are arranged at an angle so that the material inside the cavity 15 is conveyed to the cavity 15. The cavity 15 conveys the excess material to the discharge pipe 5, and after being filtered by the filter 6, it is returned to the spraying assembly, thus realizing the recycling of the coating material.

[0048] Example 3

[0049] like Figure 1-2 As shown, the PET release film coating machine proposed in this utility model differs from the first embodiment in that the lifting assembly includes a telescopic rod 4, a connecting plate 8, a housing 10, and a mounting plate 13.

[0050] The housing 10 is mounted on the top of the base 1;

[0051] There are two telescopic rods 4. Both telescopic rods 4 are located at the top of the housing 10 and their bottom ends extend to the inside of the housing 10 and are perpendicular to the housing 10. The telescopic rods 4 are one of the following: a pneumatic cylinder, a hydraulic cylinder, and an electric telescopic rod.

[0052] Mounting plate 13 and connecting plate 8 are respectively installed at the bottom of telescopic rod 4 and located inside housing 10.

[0053] In an optional embodiment, a baffle 9 is provided at the bottom of the connecting plate 8. The baffle 9 is attached to the side of the scraper 3 and is used to limit the scraper 3 during use to prevent the scraper 3 from bending backward during use.

[0054] In this embodiment, two telescopic rods 4 are used to drive the mounting plate 13 and the connecting plate 8 to adjust their height, ensuring precise control of the coating layer of the PET film by the spraying assembly. At the same time, the position of the scraper 3 is stabilized, so that the scraper 3 can evenly scrape off the coating material on the PET film, ensuring a consistent coating thickness and improving the coating quality.

[0055] Example 4

[0056] like Figure 4 As shown, the PET release film coating machine proposed in this utility model differs from the first embodiment in that the spraying assembly includes a connecting pipe 7, a main pipe 11, and a spray nozzle 12.

[0057] The main pipe 11 is installed at the bottom of the mounting plate 13;

[0058] The connecting pipe 7 is installed in the middle of the main pipe 11 and its top extends above the housing 10 to communicate with an external conveying device through a hose to convey coating material into the main pipe 11.

[0059] There are multiple nozzles 12, which are arranged at equal intervals on the end of the main pipe 11.

[0060] In an optional embodiment, the main pipe 11 is U-shaped, and the nozzles 12 are located on the lower end faces of both sides of the main pipe 11. The nozzles 12 on both sides of the main pipe 11 are staggered to ensure that the coating material on the PET film is uniform and without omissions.

[0061] In this embodiment, the coating material is conveyed to the main pipe 11 through the connecting pipe 7 and the external conveying device via a flexible hose. The main pipe 11 then sprays the coating material onto the surface of the PET film through the nozzles 12. The nozzles 12 are arranged in an alternating pattern to ensure that the material is applied evenly and without omissions on the PET film, thereby improving coating efficiency and product quality.

[0062] Example 5

[0063] like Figure 6 As shown, the PET release film coating machine proposed in this utility model differs from Embodiment 1 in that the adjusting mechanism 2 includes a connecting rod 21, a lead screw 22, a nut 23, and a fixing rod 24.

[0064] The number of fixing rods 24 is at least two, and the fixing rods 24 are located at the top of the scraper 3 and the top extends upward toward the connecting plate 8;

[0065] The connecting rod 21 is installed at the top of the fixed rod 24;

[0066] Nut 23 is located in the middle of connecting rod 21;

[0067] The lead screw 22 is inserted into the inside of the nut 23 and connected to the connecting plate 8. During use, the lead screw 22 can be connected to a stepper motor for rotation adjustment, further improving the adjustment accuracy.

[0068] In this embodiment, the lead screw 22 rotates inside the nut 23, causing the nut 23 to drive the connecting rod 21 to adjust its position along the height direction of the lead screw 22. At the same time, the connecting rod 21 drives the fixing rod 24 to slide on the connecting plate 8, causing the fixing rod 24 to drive the scraper 3 to adjust its position. This results in the bottom ends of the two scrapers 3 being arranged in a stepped manner, allowing the coating material on the PET film to be scraped off in layers, reducing the thickness of a single scraping, reducing scraping resistance, ensuring a uniform coating layer, improving the coating effect and product quality. At the same time, the scraper 3 can also be used for scraping material independently, increasing the applicability of the scraper 3.

[0069] Example 6

[0070] like Figure 5-6 As shown, the PET release film coating machine proposed in this utility model differs from the first embodiment in that the scraper 3 includes a blade head 31 and a blade body 32.

[0071] The blade 32 is located at the bottom of the connecting plate 8 or the fixing rod 24;

[0072] The blade head 31 is mounted at the bottom end of the blade body 32 and the bottom end is inclined to the side of the blade body 32.

[0073] In this embodiment, the blade head 31 is tilted by the blade body 32, so that the coating material moves to the side of the blade head 31, reducing the accumulation of coating material on the PET film, reducing the difficulty of scraping, ensuring uniform distribution of the coating layer, and further improving coating efficiency and product quality.

[0074] In this invention, the lead screw 22 rotates inside the nut 23, causing the nut 23 to drive the connecting rod 21 to adjust its position along the height direction of the lead screw 22. Simultaneously, the connecting rod 21 drives the fixing rod 24 to slide on the connecting plate 8, causing the fixing rod 24 to drive the scraper 3 to adjust its position, so that the bottom ends of the two scrapers 3 are arranged in a stepped manner. At the same time, the telescopic rod 4 drives the mounting plate 13 and the connecting plate 8 to move towards the base 1, placing the nozzle 12 and the scraper 3 in preset positions. The PET film is then conveyed through the base 1. During the conveying process... The coating material is delivered to the main pipe 11 through an external conveying device via a hose and connecting pipe 7. The coating material is then evenly sprayed onto the surface of the PET film through the nozzle 12. At the same time, the PET film moves the coating material toward the scraper 3, allowing multiple scrapers 3 arranged in a stepped manner to guide and scrape away the coating material layer by layer, further optimizing the control of the coating thickness, ensuring coating uniformity, and improving the overall quality of the product. Meanwhile, excess coating material is collected through the cavity 14 and the container 15, and the collected coating material is filtered through the filter 6 for recycling.

[0075] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A PET release film coater characterized by, Includes a base (1), a scraper (3), and a lifting assembly; The lifting assembly is installed on the top of the base (1), and the inner front of the lifting assembly is provided with a spraying assembly for uniformly coating the PET film in use. The number of scrapers (3) is at least two. Both scrapers (3) are located inside the lifting assembly and are arranged at an angle toward one side of the base (1). The top of the scraper (3) is provided with an adjustment mechanism (2) for scraping the material coated on the PET film in layers by the two scrapers (3) in use.

2. The PET release film coating machine according to claim 1, characterized in that, The discharge pipe (5) is installed on the side of the base (1) and communicates with the base (1). The end of the discharge pipe (5) is provided with a filter (6) for filtering the coating material.

3. The PET release film coating machine according to claim 2, wherein, A cavity (14) and a container (15) are respectively provided at the top of the base (1) and below the scraper (3) and the spraying assembly. The cavity (14) and the container (15) are connected, and the container (15) is connected to the discharge pipe (5).

4. A PET release film coating machine according to claim 3, characterized in that, The inner bottom of both the cavity (14) and the container (15) are inclined. The bottom of the cavity (14) is inclined toward the container (15), and the bottom of the container (15) is inclined toward the discharge pipe (5).

5. A PET release film coating machine according to claim 1, characterized in that, The lifting assembly includes a telescopic rod (4), a connecting plate (8), a housing (10), and a mounting plate (13); The housing (10) is mounted on the top of the base (1); There are two telescopic rods (4), both of which are set at the top of the housing (10) and extend to the inside of the housing (10) and are perpendicular to the housing (10); The mounting plate (13) and the connecting plate (8) are respectively installed at the bottom of the telescopic rod (4) and located inside the housing (10).

6. A PET release film coating machine according to claim 5, characterized in that, The spraying assembly includes a connecting pipe (7), a main pipe (11), and a spray nozzle (12); The main pipe (11) is installed at the bottom of the mounting plate (13); The connecting pipe (7) is installed in the middle of the main pipe (11) and its top extends to the top of the housing (10) to communicate with the external conveying device through a hose to convey coating material into the main pipe (11); There are multiple nozzles (12), which are arranged at equal intervals on the end of the main pipe (11).

7. A PET release film coating machine according to claim 6, characterized in that, The main pipe (11) is U-shaped, and the nozzles (12) are located on the lower end face of both sides of the main pipe (11). The nozzles (12) on both sides of the main pipe (11) are arranged in an alternating manner.

8. A PET release film coating machine according to claim 5, characterized in that, A baffle (9) is provided at the bottom of the connecting plate (8), and the baffle (9) is attached to the side of the scraper (3).

9. A PET release film coating machine according to claim 5, characterized in that, The adjusting mechanism (2) includes a connecting rod (21), a lead screw (22), a nut (23), and a fixing rod (24); The number of fixing rods (24) is at least two, and the fixing rods (24) are set at the top of the scraper (3) and the top extends upward toward the connecting plate (8); The connecting rod (21) is installed at the top of the fixed rod (24); The nut (23) is located in the middle of the connecting rod (21); The lead screw (22) is inserted into the inside of the nut (23) and connected to the connecting plate (8).

10. A PET release film coating machine according to claim 9, characterized in that, The scraper (3) includes a blade head (31) and a blade body (32); The blade (32) is located at the bottom of the connecting plate (8) or the fixing rod (24); The blade (31) is mounted at the bottom of the blade (32) and the bottom is inclined toward the side of the blade (32).

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