High-performance PET release film coating machine with uniform coating structure

Abstract

The utility model discloses a high-performance PET release film coating machine with a uniform coating structure, which comprises a base, rotating guide rollers are mounted on the upper surfaces of two ends of the base, a closed shell is fixedly arranged on the upper surface of the base, a scraping backflow mechanism is arranged on the base, and the scraping backflow mechanism is connected with the guide rollers. And the utilization rate of the coating is increased through collection and reinjection of the coating in the coating process. According to the high-performance PET release film coating machine with the uniform coating structure, the mode that the spray heads are distributed in an inclined and staggered mode is adopted, so that the situation that the adjacent spray heads influence each other in the spraying process is avoided, the instant spraying amount is increased while uniform spraying is guaranteed, the situations that spraying is missed and the spraying thickness does not reach the standard are avoided, and the spraying efficiency is improved. According to the paint spraying device, the overall spraying efficiency is improved, after spraying is completed, paint is scraped off through the V-shaped first scraping plate, redundant paint can flow towards the two sides along the inclined face of the first scraping plate and is recycled, and therefore paint waste cannot be caused while saturated spraying is conducted.

Description

Technical Field

[0001] The utility model relates to the technical field of coating machines, in particular to a high-performance coating machine for PET release films which is provided with a uniform coating structure. Background Art

[0002] PET release film, also known as PET silicone film, is a special film mainly made of polyester material with excellent physical and chemical properties. The characteristics of PET release film include good heat resistance, chemical resistance, electrical insulation and high transparency. Its surface is specially treated and coated with silicone oil, which makes PET release film have the characteristics of low surface adhesion, which can effectively reduce adhesion and is easy to peel off. PET release film is used in many fields, such as electronics, packaging printing, laser anti-counterfeiting, reflective materials, adhesive products and die-cutting, etc., especially in the surface coating process of thermal transfer, metal, plastic and paper, etc. It plays an important role. It protects the surface of the material from pollution, corrosion and scratches, and also plays the role of isolation and regulating surface viscosity. There are two types of PET release films: single-sided release film and double-sided release film. Single-sided release film is usually used for materials that need to be peeled off after surface coating, such as aluminum foil, polyvinyl chloride, polypropylene, etc. Double-sided release film is suitable for applications that require coating or adhesive on both surfaces to assist processing, interlayer separation, etc. The preparation process of PET release film is mainly divided into two stages: coating and baking. First, the PET film is subjected to a specific coating process to evenly coat the release agent dispersed in an organic solvent on the PET film to form a thin film, and then the coated The PET film is sent into the oven for baking, so that the release agent does not volatilize and solidifies quickly. Finally, the PET film and the release agent are completely separated during release. The PET release film has good heat resistance and chemical resistance. The PET release film can work in a high temperature and chemical environment without degradation, aging and disintegration, ensuring the service life of the material. The surface of the PET release film is smooth and transparent, which can ensure the clarity and brightness of the raw material surface. It can withstand high-strength tearing and is not easy to crack and break, which increases the service life of the material. At the same time, the surface electrical insulation performance of the PET release film is excellent, which can effectively avoid static electricity and discharge phenomena generated by electrical appliances and electronic components. For example, PET release film can also effectively isolate the viscosity between the surface material and the coating, avoid adhesive damage, and improve processing efficiency. The coating on the surface of the PET release film needs to ensure a certain thickness during the spraying process so that the release layer can be stably formed and cured to protect the surface of the PET film. However, when spraying, it is often necessary to use a large-size nozzle for spraying due to the large spraying surface. This will cause the coatings sprayed from adjacent nozzles in the large-size nozzle to interfere with each other, making the coating on the surface of the PET film uneven and causing defects after forming and curing, which seriously affects the normal processing of the PET release film. Utility Model Content

[0003] The utility model aims to provide a high-performance PET release film coating machine with a uniform coating structure to solve the problem of product defects caused by uneven coating proposed in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-performance PET release film coating machine with a uniform coating structure, comprising a base, rotating guide rollers are installed on the upper surfaces of both ends of the base, and a closed shell is fixedly installed on the upper surface of the base, an adjustable electric push rod is fixedly installed on the upper end of the closed shell, and the lower end of the adjustable electric push rod penetrates the inner top surface of the closed shell, and the lower end of the adjustable electric push rod is fixedly connected to a mounting plate, a nozzle is fixedly installed on the lower surface of the mounting plate, and a connecting pipe is fixedly installed on the upper surface of the mounting plate, and a scraper reflux mechanism is provided on the base to improve the utilization rate of the coating by collecting and re-injecting the coating during the coating process.

[0005] Preferably, the scraper return mechanism includes: a lifting electric push rod, the lower end of the lifting electric push rod passes through the inner top surface of the closed shell, and the lower end of the lifting electric push rod is fixedly connected to the second scraper, and the second scraper is fixedly connected to the first scraper on the side facing the mounting plate, a collecting chamber is opened inside the base, a suction pump is fixedly installed on the upper surface of the closed shell, a reflux pipe is connected between the inlet end of the suction pump and the collecting chamber, and the outlet end of the suction pump is connected to one end of the reinjection pipe, and the other end of the reinjection pipe passes through the inner top surface of the closed shell, and the end of the reinjection pipe that passes through the inner top surface of the closed shell is connected to the connecting pipe through a hose.

[0006] By adopting the above technical solution, the coating can be recycled.

[0007] Preferably, the nozzles are in a straight line shape, and are obliquely distributed on the lower surface of the mounting plate, and the lateral projections of adjacent nozzles partially overlap.

[0008] By adopting the above technical solution, the paint sprayed from the nozzle can be partially overlapped to ensure the spraying thickness.

[0009] Preferably, the lower end surface of the second scraper is lower than the lower end surface of the first scraper, and the first scraper is arranged in a V-shape with the tip facing the mounting plate.

[0010] By adopting the above technical solution, the first scraper can guide the scraped paint to both sides.

[0011] Preferably, a self-cleaning mechanism is provided on one side of the second scraper, and the self-cleaning mechanism is used to prevent the paint from condensing on the surface of the second scraper.

[0012] By adopting the above technical solution, the surface of the second scraper can be kept clean to avoid affecting the coating.

[0013] Preferably, the self-cleaning mechanism includes: a sliding rod, which is fixedly arranged on the side surface of the second scraper, and a rotating displacement rod is installed on the side surface of the second scraper below the sliding rod, a displacement motor is fixedly installed on the side surface of the second scraper where one end of the displacement rod is located, and a cleaning rod is installed on the outer surfaces of the sliding rod and the displacement rod.

[0014] By adopting the above technical solution, the cleaning rod can slide on the sliding rod.

[0015] Preferably, the cleaning rod is slidably connected to the sliding rod, and the cleaning rod is threadedly connected to the displacement rod, and the displacement rod is fixedly connected to the output shaft of the displacement motor, and the shape of the inner surface of the lower end of the cleaning rod is the same as the shape of the outer surface of the lower end of the second scraper.

[0016] By adopting the above technical solution, the cleaning rod can clean the outer surface of the lower end of the second scraper through the inner surface of the lower end.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the high-performance PET release film coating machine with a uniform coating structure:

[0018] 1. The nozzles are staggered in an oblique manner so that adjacent nozzles will not affect each other during the spraying process, ensuring uniform spraying while increasing the instantaneous spraying volume, avoiding spray leakage and substandard spraying thickness, and improving the overall spraying efficiency;

[0019] 2. Further, after spraying is completed, the paint is scraped off by a V-shaped first scraper, so that the excess paint can flow to both sides along the inclined surface of the first scraper and be recovered, thereby not causing waste of paint during saturated spraying;

[0020] 3. Furthermore, a second scraper is used to scrape the coating that has been initially scraped off by the first scraper again to achieve a better and more delicate coating effect. The use of a self-cleaning mechanism makes the molding effect of the PET release film better. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the overall cutaway surface of the utility model;

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the cross-section surface connecting the lifting electric push rod and the second scraper of the utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the connection between the mounting plate and the nozzle of the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the connection between the base and the collection chamber of the utility model;

[0026] Figure 6 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0027] In the figure: 1. base; 2. guide roller; 3. closed shell; 4. adjusting electric push rod; 5. mounting plate; 6. nozzle; 7. connecting pipe; 8. lifting electric push rod; 9. second scraper; 10. first scraper; 11. collecting chamber; 12. suction pump; 13. return pipe; 14. re-injection pipe; 15. sliding rod; 16. displacement rod; 17. displacement motor; 18. cleaning rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-6 The utility model provides a technical solution: a high-performance PET release film coating machine with a uniform coating structure.

[0030] Embodiment 1

[0031] The present embodiment discloses: a base 1, a rotating guide roller 2 is installed on the upper surface of both ends of the base 1, and a closed shell 3 is fixedly installed on the upper surface of the base 1, an adjustable electric push rod 4 is fixedly installed on the upper end of the closed shell 3, and the lower end of the adjustable electric push rod 4 penetrates the inner top surface of the closed shell 3, and the lower end of the adjustable electric push rod 4 is fixedly connected with a mounting plate 5, a nozzle 6 is fixedly installed on the lower surface of the mounting plate 5, and a connecting pipe 7 is fixedly installed on the upper surface of the mounting plate 5, and a scraping reflux mechanism is provided on the base 1, and the utilization rate of the coating is improved by collecting and re-injecting the coating during the coating process;

[0032] The scraper return mechanism comprises: a lifting electric push rod 8, the lower end of which passes through the inner top surface of the closed shell 3, and a second scraper 9 is fixedly connected to the lower end of the lifting electric push rod 8, and a first scraper 10 is fixedly connected to the side of the second scraper 9 facing the mounting plate 5, a collecting chamber 11 is opened inside the base 1, a suction pump 12 is fixedly installed on the upper surface of the closed shell 3, a return pipe 13 is connected between the inlet end of the suction pump 12 and the collecting chamber 11, and an outlet end of the suction pump 12 is connected to one end of a refilling pipe 14, and the other end of the refilling pipe 14 passes through the inner top surface of the closed shell 3, and one end of the refilling pipe 14 passing through the inner top surface of the closed shell 3 is connected to the connecting pipe 7 through a hose;

[0033] The nozzles 6 are in a straight line shape, and are obliquely distributed on the lower surface of the mounting plate 5, and the lateral projections of adjacent nozzles 6 partially overlap;

[0034] The lower end surface of the second scraper 9 is lower than the lower end surface of the first scraper 10, and the first scraper 10 is V-shaped with the tip facing the mounting plate 5;

[0035] During normal use, the guide roller 2 is pulled by the unwinding and winding devices on both sides to tension the PET film. At this time, the suction pump 12 is started to inject the paint pre-injected into the collection chamber 11 into the connecting pipe 7 through the reflux pipe 13 through the refill pipe 14. The connecting pipe 7 sprays the paint through the nozzle 6 on the lower surface of the mounting plate 5. The thickness of the paint during rapid spraying is ensured by partially overlapping the spraying area of ​​the nozzle 6. The distance between the nozzle 6 and the PET film can be adjusted by driving the mounting plate 5 to rise and fall by the adjusting electric push rod 4 installed on the closed shell 3. At this time, as the PET film moves, the first scraper 10 first scrapes off the paint preliminarily, and the excess paint is scraped off and flows along the inclined surface of the first scraper 10 to both sides to the collection chamber 11 on the upper surface of the base 1 to be collected and reused. Then the second scraper 9 finely coats the paint on the surface of the PET film again to make the paint more uniform.

[0036] Embodiment 2

[0037] This embodiment is based on the embodiment 1 and discloses that: a self-cleaning mechanism is provided on one side of the second scraper 9, and the self-cleaning mechanism is used to prevent the paint from condensing on the surface of the second scraper 9;

[0038] The self-cleaning mechanism includes: a sliding rod 15, the sliding rod 15 is fixedly arranged on the side surface of the second scraper 9, and a rotating displacement rod 16 is installed on the side surface of the second scraper 9 below the sliding rod 15, a displacement motor 17 is fixedly installed on the side surface of the second scraper 9 where one end of the displacement rod 16 is located, and a cleaning rod 18 is installed on the outer surfaces of the sliding rod 15 and the displacement rod 16;

[0039] The cleaning rod 18 is slidably connected to the sliding rod 15, and the cleaning rod 18 is threadedly connected to the displacement rod 16, and the displacement rod 16 is fixedly connected to the output shaft of the displacement motor 17, and the shape of the inner side surface of the lower end of the cleaning rod 18 is the same as the shape of the outer surface of the lower end of the second scraper 9;

[0040] When it is necessary to clean the lower end of the second scraper 9, the lifting electric push rod 8 is started to drive the second scraper 9 to move upward, and then the displacement motor 17 is started to connect the displacement rod 16 with the cleaning rod 18 through a thread, so that the cleaning rod 18 slides laterally on the sliding rod 15 relative to the second scraper 9, and the scraping of the coagulated paint is completed by the inner side surface of the lower end of the cleaning rod 18 sliding in contact with the outer surface of the lower end of the second scraper 9.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-performance PET release film coating machine with a uniform coating structure, comprising a base (1), wherein rotating guide rollers (2) are mounted on the upper surfaces of both ends of the base (1), and a closed shell (3) is fixedly mounted on the upper surface of the base (1), an adjustable electric push rod (4) is fixedly mounted on the upper end of the closed shell (3), and the lower end of the adjustable electric push rod (4) penetrates the inner top surface of the closed shell (3), and the lower end of the adjustable electric push rod (4) is fixedly connected to a mounting plate (5), characterized in that: A nozzle (6) is fixedly arranged on the lower surface of the mounting plate (5), and a connecting pipe (7) is fixedly arranged on the upper surface of the mounting plate (5); a scraping and reflowing mechanism is arranged on the base (1), and the utilization rate of the coating is improved by collecting and re-injecting the coating during the coating process; The nozzles (6) are in a straight line shape, and are obliquely distributed on the lower surface of the mounting plate (5), and the lateral projections of adjacent nozzles (6) partially overlap.

2. A high performance PET release film coating machine with a uniform coating structure according to claim 1, characterized in that: The scraper return mechanism comprises: a lifting electric push rod (8), the lower end of which passes through the inner top surface of the closed shell (3), and the lower end of which is fixedly connected to a second scraper (9), and the second scraper (9) is fixedly connected to a first scraper (10) on the side facing the mounting plate (5), a collecting chamber (11) is provided inside the base (1), a suction pump (12) is fixedly installed on the upper surface of the closed shell (3), a return pipe (13) is connected between the inlet end of the suction pump (12) and the collecting chamber (11), and the outlet end of the suction pump (12) is connected to one end of a refill pipe (14), and the other end of the refill pipe (14) passes through the inner top surface of the closed shell (3), and the end of the refill pipe (14) passing through the inner top surface of the closed shell (3) is connected to the connecting pipe (7) through a hose.

3. A high performance PET release film coating machine with a uniform coating structure according to claim 2, characterized in that: The lower end surface of the second scraper (9) is lower than the lower end surface of the first scraper (10), and the first scraper (10) is arranged in a V shape with the tip facing the mounting plate (5).

4. A high performance PET release film coating machine with a uniform coating structure according to claim 2, characterized in that: A self-cleaning mechanism is provided on one side of the second scraper (9), and the self-cleaning mechanism is used to prevent the paint from condensing on the surface of the second scraper (9).

5. A high performance PET release film coating machine with a uniform coating structure according to claim 4, characterized in that: The self-cleaning mechanism comprises: a sliding rod (15), the sliding rod (15) being fixedly arranged on the side surface of the second scraper (9), and a rotatable displacement rod (16) being installed on the side surface of the second scraper (9) below the sliding rod (15), a displacement motor (17) being fixedly installed on the side surface of the second scraper (9) where one end of the displacement rod (16) is located, and a cleaning rod (18) being installed on the outer surfaces of the sliding rod (15) and the displacement rod (16).

6. A high performance PET release film coating machine with a uniform coating structure according to claim 5, characterized in that: The cleaning rod (18) is slidably connected to the sliding rod (15), and the cleaning rod (18) is threadedly connected to the displacement rod (16), and the displacement rod (16) is fixedly connected to the output shaft of the displacement motor (17), and the shape of the inner surface of the lower end of the cleaning rod (18) is the same as the shape of the outer surface of the lower end of the second scraper (9).

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