Quantitative coating device for papermaking

Abstract

The utility model relates to the technical field of coating, in particular to a quantitative coating device for papermaking. According to the technical scheme, the coating device comprises a coating material groove, a coating rotating roller is rotatably mounted in the coating material groove, a pressing rotating roller is rotatably mounted at the position, above the coating rotating roller, in the coating material groove, and rotating guide rollers are symmetrically and rotatably mounted on the two sides of the upper surface of the coating material groove; an ultrasonic defoamer is fixedly mounted on one side in the coating material groove, an electric push rod is fixedly connected to the side, close to the ultrasonic defoamer, of the inner wall of the coating material groove, and a scraper is fixedly connected to the tail end of the electric push rod. In the process that the liquid coating is coated on the surface of the paper, tiny bubbles in the liquid coating are eliminated, tiny pits are prevented from being formed on the surface of the paper after the liquid coating is cured, and the distribution uniformity of the liquid coating on the surface of the paper is improved, so that the performance of the coated paper is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating, in particular to a papermaking quantitative coating device. Background Art

[0002] Coating in papermaking refers to evenly covering the surface of paper with liquid coating, and then solidifying it into a physical or chemical layer through processes such as drying and curing to change the surface properties of the paper, such as enhancing the strength and glossiness of the paper, adjusting the surface flatness and preventing moisture penetration.

[0003] At present, when a coating roller is used to apply liquid coating to the surface of paper, there are often many tiny bubbles in the liquid coating applied to the surface of paper. After the liquid coating is solidified, tiny depressions will be formed on the surface of the paper, reducing the physical properties of the paper such as smoothness, glossiness and strength. For this reason, we propose a papermaking quantitative coating device. Utility Model Content

[0004] The utility model aims to provide a quantitative coating device for papermaking, which has the advantages of eliminating tiny bubbles in the liquid coating during the process of coating the liquid coating on the surface of the paper, avoiding the formation of tiny depressions on the surface of the paper after the liquid coating is solidified, and improving the uniformity of the distribution of the liquid coating on the surface of the paper, thereby improving the performance of the paper after coating, and solving the problem that when the liquid coating is currently coated on the surface of the paper using a coating roller, there are often many tiny bubbles in the liquid coating coated on the surface of the paper, and tiny depressions will be formed on the surface of the paper after the liquid coating is solidified, thereby reducing the physical properties of the paper such as smoothness, glossiness and strength.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a papermaking quantitative coating device, comprising a coating material trough, a coating roller is rotatably installed inside the coating material trough, a downward pressure roller is rotatably installed inside the coating material trough at a position above the coating roller, rotating guide rollers are symmetrically rotatably installed at both sides of the upper surface of the coating material trough, an ultrasonic defoamer is fixedly installed on one side of the coating material trough, an electric push rod is fixedly connected to the side of the inner wall of the coating material trough close to the ultrasonic defoamer, and a scraper is fixedly connected to the end of the electric push rod.

[0006] Preferably, a rotating motor is fixedly installed on the front surface of the coating material tank, and the end of the output shaft of the rotating motor is fixedly connected to the end of the coating roller, and the rotating motor drives the coating roller to rotate.

[0007] Preferably, a smooth plate is fixedly installed inside the coating trough near the scraper position, and when the scraper scrapes off excess liquid coating on the paper surface, the smooth plate supports the paper, so that the scraper can better scrape off excess liquid coating on the paper surface.

[0008] Preferably, the outer surfaces of the two rotating guide rollers are fixedly installed with limiting rings near both ends to limit the paper, facilitate the paper to enter and exit the coating material slot accurately, and prevent the moving paper from deviating.

[0009] Preferably, a stirring paddle is rotatably installed in the coating tank below the coating roller.

[0010] Preferably, a stirring motor is fixedly installed on one side of the outer surface of the coating tank, and the end of the stirring motor output shaft and the end of the stirring paddle are fixedly connected. The stirring motor drives the stirring paddle to stir the liquid coating inside the coating tank, so that the liquid coating is stirred and mixed evenly, thereby improving the performance of the paper after being coated with liquid coating.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model achieves the effect of eliminating tiny bubbles in the liquid coating during the process of coating the liquid coating on the paper surface by arranging a coating material trough, a lower pressure roller, a coating roller, a rotating guide roller, an electric push rod, a scraper and an ultrasonic defoamer, so as to avoid the formation of tiny depressions on the paper surface after the liquid coating is solidified, improve the uniformity of the liquid coating on the paper surface, and thus improve the performance of the paper after coating. The paper enters the coating material trough after passing through a rotating guide roller, and passes through between the coating roller and the lower pressure roller, and then comes out of the coating material trough through another rotating guide roller. The paper between the two rotating guide rollers is in a "V" shape. The coating roller rotates so that the liquid coating in the coating material trough is coated on the outer surface of the paper. When the paper coated with the liquid coating passes under the ultrasonic defoamer, the tiny bubbles in the liquid coating on the paper surface are eliminated by the ultrasonic defoamer. The electric push rod drives the scraper to move to adjust the distance between it and the paper, and the excess liquid coating on the paper surface is scraped off by the scraper to achieve the purpose of quantitative coating on demand.

[0013] 2. The utility model provides a smooth plate, so when the scraper scrapes off excess liquid coating on the surface of the paper, the smooth plate supports the paper, so that the scraper can better scrape off excess liquid coating on the surface of the paper.

[0014] 3. The utility model is provided with a stirring paddle and a rotating motor, and the stirring paddle is driven by the stirring motor to stir the liquid coating inside the coating tank, so that the liquid coating is stirred and mixed evenly, thereby improving the performance of the paper after being coated with the liquid coating.

[0015] 4. The present invention sets a limit ring to limit the position of the paper, so that the paper can enter and exit the coating slot accurately and prevent the paper from deflecting during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the partial main cross-sectional structure of the electric push rod of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the utility model from top view.

[0020] Figure numerals: 1. rotating motor; 2. coating material trough; 3. pressing roller; 4. ultrasonic defoamer; 5. smooth plate; 6. limiting ring; 7. rotating guide roller; 8. electric push rod; 9. stirring motor; 10. stirring paddle; 11. coating roller; 12. scraper. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Embodiment 1

[0023] like Figure 1-Figure 4 As shown, the utility model proposes a papermaking quantitative coating device, including a coating material trough 2, a coating roller 11 is rotatably installed inside the coating material trough 2, a rotating motor 1 is fixedly installed on the front surface of the coating material trough 2, the end of the output shaft of the rotating motor 1 is fixedly connected to the end of the coating roller 11, the rotating motor 1 drives the coating roller 11 to rotate, and the liquid coating inside the coating material trough 2 is transferred and coated on the outer surface of the paper through the coating roller 11, a lower pressure roller 3 is rotatably installed inside the coating material trough 2 at a position above the coating roller 11, and rotating guide rollers 7 are symmetrically rotatably installed on both sides of the upper surface of the coating material trough 2. The two rotating guide rollers 7 guide the paper entering and exiting the coating material trough 2, and the outer surfaces of the two rotating guide rollers 7 are fixedly installed with limiting rings 6 near the two ends. The limiting rings 6 limit the paper, which is convenient for the paper to accurately enter and exit the coating material trough 2 and prevent the moving paper from deviating.

[0024] An ultrasonic defoamer 4 is fixedly installed on one side of the coating material trough 2, an electric push rod 8 is fixedly connected to one side of the inner wall of the coating material trough 2 near the ultrasonic defoamer 4, and a scraper 12 is fixedly connected to the end of the electric push rod 8, and a smooth plate 5 is fixedly installed near the scraper 12 inside the coating material trough 2, the paper coated with liquid paint passes between the smooth plate 5 and the scraper 12, and the side of the paper not coated with liquid paint contacts the outer surface of the smooth plate 5, then when the scraper 12 scrapes off excess liquid paint on the surface of the paper, the smooth plate 5 supports the paper, so that the scraper 12 can better scrape off excess liquid paint on the surface of the paper.

[0025] When the utility model is in use, the paper passes through a rotating guide roller 7 and enters the coating material trough 2, and after passing between the coating roller 11 and the lower pressure roller 3, passes through another rotating guide roller 7 and comes out of the coating material trough 2. The paper between the two rotating guide rollers 7 is in a "V" shape. The coating roller 11 rotates so that the liquid coating in the coating material trough 2 is coated on the outer surface of the paper. When the paper coated with the liquid coating passes under the ultrasonic defoamer 4, the ultrasonic defoamer 4 eliminates tiny bubbles in the liquid coating on the surface of the paper. The electric push rod 8 drives the scraper 12 to move to adjust the distance between it and the paper. The scraper 12 scrapes off the excess liquid coating on the surface of the paper to achieve the purpose of quantitative coating on demand.

[0026] Embodiment 2

[0027] like Figure 2 As shown, the utility model proposes a papermaking quantitative coating device. Compared with the first embodiment, this embodiment also includes a stirring paddle 10 rotatably installed inside the coating material tank 2 below the coating roller 11, and a stirring motor 9 is fixedly installed on one side of the outer surface of the coating material tank 2, and the end of the output shaft of the stirring motor 9 and the end of the stirring paddle 10 are fixedly connected.

[0028] In this embodiment, the stirring motor 9 drives the stirring paddle 10 to stir the liquid coating in the coating tank 2, so that the liquid coating is stirred and mixed evenly, thereby improving the performance of the paper after being coated with the liquid coating.

[0029] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A papermaking quantitative coating device, comprising a coating material tank (2), characterized in that: A coating roller (11) is rotatably mounted inside the coating material trough (2), a lower pressure roller (3) is rotatably mounted inside the coating material trough (2) at a position above the coating roller (11), rotating guide rollers (7) are symmetrically rotatably mounted at positions on both sides of the upper surface of the coating material trough (2), an ultrasonic defoamer (4) is fixedly mounted on one side of the coating material trough (2), an electric push rod (8) is fixedly connected to the side of the inner wall of the coating material trough (2) close to the ultrasonic defoamer (4), and a scraper (12) is fixedly connected to the end of the electric push rod (8).

2. A papermaking quantitative coating device according to claim 1, characterized in that: A rotating motor (1) is fixedly mounted on the front surface of the coating material tank (2), and the end of the output shaft of the rotating motor (1) is fixedly connected to the end of the coating roller (11).

3. A papermaking quantitative coating device according to claim 1, characterized in that: A smooth plate (5) is fixedly installed inside the coating material tank (2) near the scraper (12).

4. A papermaking quantitative coating device according to claim 1, characterized in that: Limiting rings (6) are fixedly mounted on the outer surfaces of the two rotating guide rollers (7) near both ends.

5. A papermaking quantitative coating device according to claim 1, characterized in that: A stirring paddle (10) is rotatably mounted inside the coating material tank (2) at a position below the coating roller (11).

6. A papermaking quantitative coating device according to claim 5, characterized in that: A stirring motor (9) is fixedly mounted on one side of the outer surface of the coating material tank (2), and the end of the output shaft of the stirring motor (9) is fixedly connected to the end of the stirring paddle (10).

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