Quantitative coating mechanism for printing

Abstract

The utility model provides a quantitative coating mechanism for printing, which comprises a first rack and a second rack, a printing roller is arranged in the middle of the bottom of the first rack and the middle of the bottom of the second rack, a back roller is arranged above the printing roller, conveying rollers are arranged on two sides above the back roller, and a quantitative coating mechanism is arranged on one side of the printing roller. The quantitative coating mechanism is arranged on one side of the printing roller, quantitative and uniform feeding on the printing roller is achieved, the printing effect of the printing roller is guaranteed, printing liquid in the storage box is quantitatively conveyed into the feeding cylinder through cooperation of a servo pump, a proportional valve and a flow sensor, stable printing liquid supply is guaranteed, and the printing effect of the printing roller is guaranteed. The printing liquid can be continuously supplied to the feeding barrel through the feeding roller, the printing liquid can be conveyed to the feeding roller at the bottom through a row of liquid outlets evenly formed in the bottom of the feeding barrel, the integrity and uniformity of feeding are guaranteed, quantitative and even liquid adding is conducted on the printing roller through the feeding roller, and therefore the printing effect of the printing roller is guaranteed.

Description

Technical Field

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

[0002] A coater is mainly used for the surface coating process production of films, papers, etc. This machine coats a roll of base material with a specific functional glue, coating, ink, etc. The quantitative coating mechanism is usually used to ensure that the coating material (such as ink or coating) can be evenly and accurately coated on the surface of the printing substrate during the printing process.

[0003] The prior art discloses a metering oil supply device for an anilox roll of a coater (Publication No.: CN213943718U), which includes a fixed box. A main anilox roll is rotatably connected inside the fixed box, and the top of the main anilox roll extends into the fixed box. The structure of the utility model is reasonable and the operation is convenient. Through the floating plate and the floating ball, they can rise as the oil level increases, and then the pressing column can be moved. When the pressing column presses the closing switch, the closing switch will turn off the liquid extraction pump, thereby stopping the supply of oil to the metering tank. At this time, the metering tank stores a fixed amount of oil, so that each oil supply can be quantitative, without wasting resources, and can supply oil evenly, which can greatly reduce the occurrence of defective products and is convenient to use.

[0004] However, the above technical solution and the prior art also have the following defects:

[0005] During the use of this device, the driving of the first motor drives the metering tank and the wiping cotton to move horizontally back and forth. During the reciprocating movement, the feeding of the anilox roll is realized, so that the main anilox roll adheres to the oil. However, during the feeding process of the wiping cotton moving horizontally back and forth along the upper surface of the anilox roll, due to the normal rotation and printing of the anilox roll, the horizontal position of the feeding position on the surface of the anilox roll changes, which affects the overall feeding of the anilox roll, may cause uneven distribution of the oil on the surface of the anilox roll, resulting in unstable feeding and affecting the printing effect. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a quantitative coating mechanism for printing to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A quantitative coating mechanism for printing, including a first frame and a second frame. A printing roll is arranged at the center of the bottom of the first frame and the second frame. A back roll is arranged above the printing roll. Conveyor rolls are arranged on both sides above the back roll. A quantitative coating mechanism is arranged on one side of the printing roll. The quantitative coating mechanism is used for quantitatively conveying printing liquid to the printing roll to ensure uniform feeding and printing quality;

[0009] A material scraping and collecting assembly is provided at the bottom of the quantitative coating mechanism. The material scraping and collecting assembly is used for leveling in the quantitative coating mechanism to ensure the feeding quality.

[0010] Preferably, the quantitative coating mechanism includes a feeding roller and a quantitative mechanism. The feeding roller is arranged on one side of the printing roller and is in contact with the printing roller. The quantitative mechanism is arranged above the feeding roller and is used for conveying printing liquid onto the feeding roller.

[0011] Preferably, the quantitative mechanism includes a storage tank, a servo pump, a feeding pipe, a connecting pipe, a feeding cylinder and a liquid outlet. The feeding end of the servo pump is connected to the inside of the storage tank through the feeding pipe, and the discharging end of the servo pump is connected to the feeding cylinder through the connecting pipe. The feeding cylinder is arranged above the feeding roller, and a plurality of liquid outlets are equidistantly arranged at the center of the bottom of the inner cavity of the feeding cylinder. The plurality of liquid outlets are used for evenly distributing the printing liquid inside the feeding cylinder onto the feeding roller.

[0012] Preferably, the quantitative mechanism further includes a quantitative valve, a flow sensor and a feeding port. The quantitative valve and the flow sensor are arranged on the connecting pipe and are used for quantitatively conveying the printing liquid. The feeding port is arranged on the storage tank.

[0013] Preferably, mounting plates are arranged at both ends of the feeding cylinder, and the mounting plates are fixedly installed on the first rack and the second rack through screws.

[0014] Preferably, the material scraping and collecting assembly includes an aggregate tank, mounting plates, a support plate and a scraping plate. Mounting plates are arranged on both sides of the aggregate tank, and the mounting plates are fixedly installed on the bottoms of the first rack and the second rack through screws. The support plate is fixedly installed inside the aggregate tank, and a scraping plate is installed on the support plate through screws. The scraping plate is in contact with the bottom surface of the feeding roller.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. By arranging a quantitative coating mechanism on one side of the printing roller, quantitative and uniform feeding of the printing roller is realized, ensuring the printing effect of the printing roller. With the cooperation of the settings of the servo pump, the quantitative valve and the flow sensor, the printing liquid inside the storage tank is quantitatively conveyed into the feeding cylinder, ensuring a stable supply of the printing liquid, enabling the printing liquid to be continuously provided to the feeding cylinder. The printing liquid is conveyed to the feeding roller at the bottom through a row of evenly arranged liquid outlets at the bottom of the feeding cylinder, ensuring the integrity and uniformity of feeding. The printing liquid absorbed by the feeding roller comes into contact with the printing roller to realize automatic and uniform feeding of the printing roller, thereby ensuring the printing effect of the printing roller;

[0017] 2. By arranging a squeegee at the bottom of the feeding roller, the printing liquid on the feeding roller can be evenly smeared again, ensuring that the printing liquid coated on the feeding roller is uniform, thereby improving the printing quality. During the rotation of the feeding roller, friction is generated between the feeding roller and the squeegee. The squeegee is used to evenly smear the printing liquid on the feeding roller, so that the feeding roller is evenly covered with the printing liquid. The excess printing liquid scraped off drips automatically along the squeegee into the aggregate box, realizing automatic collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 1 is a schematic structural view of one side of the whole of the present utility model.

[0019] Figure 2 FIG. 2 is a schematic structural view of the other side of the whole of the present utility model.

[0020] Figure 3 FIG. 3 is a schematic structural view of the quantitative coating mechanism of the present utility model.

[0021] Figure 4 FIG. 4 is a schematic structural view of the material spreading and collecting assembly of the present utility model.

[0022] In the figures: 1, the first frame; 2, the second frame; 3, the printing roller; 4, the back roller; 5, the conveying roller; 6, the feeding roller; 7, the quantitative mechanism; 701, the storage tank; 702, the servo pump; 703, the feed pipe; 704, the connecting pipe; 705, the feeding cylinder; 706, the liquid outlet; 707, the quantitative valve; 708, the flow sensor; 709, the feed port; 8, the mounting plate; 9, the material spreading and collecting assembly; 901, the aggregate box; 902, the mounting plate; 903, the support plate; 904, the squeegee. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0025] Embodiment 1:

[0026] A quantitative coating mechanism for printing, comprising a first frame 1 and a second frame 2. At the center of the bottom of the first frame 1 and the second frame 2, a printing roller 3 is provided. Above the printing roller 3, a back roller 4 is provided. On both sides above the back roller 4, conveying rollers 5 are provided. The substrate passes through between the printing roller 3 and the back roller 4 through the conveying roller 5 on one side, and then is conveyed through the conveying roller 5 on the other side to achieve printing during the substrate conveying process. On one side of the printing roller 3, a quantitative coating mechanism is provided, which is used for quantitatively conveying printing liquid to the printing roller 3 to ensure uniform feeding and printing quality.

[0027] The quantitative coating mechanism includes a feeding roller 6 and a quantitative mechanism 7. The feeding roller 6 is provided on one side of the printing roller 3 and is in contact with the printing roller 3. The quantitative mechanism 7 is provided above the feeding roller 6 and is used for conveying the printing liquid onto the feeding roller 6.

[0028] The quantitative mechanism 7 includes a storage tank 701, a servo pump 702, a feed pipe 703, a connecting pipe 704, a feeding cylinder 705 and a liquid outlet 706. The storage tank 701 is used for storing the printing liquid, and the printing liquid is stirred by a stirring device arranged inside. The feed end of the servo pump 702 is connected to the inside of the storage tank 701 through the feed pipe 703, and the discharge end of the servo pump 702 is connected to the feeding cylinder 705 through the connecting pipe 704. The feeding cylinder 705 is provided above the feeding roller 6, and a plurality of liquid outlets 706 are equidistantly arranged at the center of the bottom of the inner cavity of the feeding cylinder 705. The plurality of liquid outlets 706 are used for evenly distributing the printing liquid inside the feeding cylinder 705 onto the feeding roller 6.

[0029] The quantitative mechanism 7 further includes a metering valve 707, a flow sensor 708 and a feed port 709. The metering valve 707 and the flow sensor 708 are arranged on the connecting pipe 704 and are used for quantitatively conveying the printing liquid. The feed port 709 is arranged on the storage tank 701.

[0030] Installation discs 8 are provided at both ends of the feeding cylinder 705. The installation discs 8 are fixedly installed on the first frame 1 and the second frame 2 by screws. By arranging the installation discs 8 at both ends of the feeding cylinder 705 and fixing the installation discs 8 to the frame by screws, the positioning installation of the feeding cylinder 705 is realized, which is convenient for the disassembly and assembly of the feeding cylinder 705.

[0031] In this embodiment, by providing a quantitative coating mechanism on one side of the printing roller 3, quantitative and uniform feeding of the printing roller 3 is achieved, ensuring the printing effect of the printing roller 3. With the cooperation of the servo pump 702, the metering valve 707, and the flow sensor 708, the printing liquid inside the storage tank 701 is quantitatively transported to the feeding cylinder 705, ensuring a stable supply of the printing liquid, enabling the printing liquid to be continuously supplied to the feeding cylinder 705. The printing liquid is transported to the feeding roller 6 at the bottom through a row of liquid discharge ports 706 evenly arranged at the bottom of the feeding cylinder 705. The shape of the liquid discharge port 706 is a cone with a larger inner diameter and a smaller outer diameter. The small-diameter fine holes are conducive to the uniform dispersion of the printing liquid in the feeding cylinder 705. The cone structure with a smaller outer diameter and a larger inner diameter provides a certain pressure difference for the outflow of the printing liquid, facilitating the smooth outflow of the printing liquid from the feeding cylinder 705, and the cylinder surface is not easily blocked, which is conducive to the cleaning of the cylinder surface. The printing liquid is evenly transported to the feeding roller 6 through a row of equidistant liquid discharge ports 706, ensuring the uniformity of feeding. The printing liquid absorbed by the feeding roller 6 comes into contact with the printing roller 3 to achieve automatic and uniform feeding of the printing roller 3, thereby ensuring the printing effect of the printing roller 3.

[0032] Embodiment Two:

[0033] Based on Embodiment One, the difference from Embodiment One is:

[0034] A smear material collection component 9 is provided at the bottom of the quantitative coating mechanism. The smear material collection component 9 is used for leveling the quantitative coating mechanism to ensure the feeding quality.

[0035] The smear material collection component 9 includes an aggregate box 901, a mounting plate 902, a support plate 903, and a scraper 904. Mounting plates 902 are provided on both sides of the aggregate box 901. The mounting plates 902 are fixedly installed at the bottom of the first frame 1 and the second frame 2 by screws. The support plate 903 is fixedly installed in the inner cavity of the aggregate box 901, and a scraper 904 is installed on the support plate 903 by screws. The scraper 904 is in contact with the bottom surface of the feeding roller 6.

[0036] In this embodiment, by providing a scraper 904 at the bottom of the feeding roller 6, the scraper 904 should be made of wear-resistant material and have a certain flexibility to ensure good contact with the surface of the feeding roller 6. The shape of the scraper 904 should be designed to match the length of the feeding roller 6 to ensure full coverage, achieving a secondary leveling process for the printing liquid on the feeding roller 6, ensuring the uniformity of the printing liquid coated on the feeding roller 6, and further improving the printing quality. During the rotation of the feeding roller 6, friction is generated between the feeding roller 6 and the scraper 904. The printing liquid on the feeding roller 6 is evenly leveled through the scraper 904, so that the printing liquid is evenly covered on the feeding roller 6. The excess printing liquid scraped off drips automatically along the scraper 904 into the aggregate box 901 for automatic collection.

[0037] Working principle: In specific use, first, the substrate is conveyed by the back roller 4 and the conveying roller 5, so that the printing surface of the substrate is attached to the printing roller 3. During the conveying process of the substrate, the printing roller 3 performs printing treatment on it. By using the metering coating mechanism on one side of the printing roller 3, continuous feeding and printing of the printing roller 3 are achieved to ensure printing quality. With the cooperation of the settings of the servo pump 702, the metering valve 707, and the flow sensor 708, the printing liquid inside the storage tank 701 is quantitatively conveyed to the feeding cylinder 705, ensuring a stable supply of the printing liquid, enabling the printing liquid to be continuously provided to the feeding cylinder 705. The printing liquid is conveyed to the feeding roller 6 at the bottom through a row of liquid discharge ports 706 evenly arranged at the bottom of the feeding cylinder 705, so that the printing liquid is continuously fed to the printing roller 3 through the feeding roller 6, thereby ensuring the printing quality of the printing roller 3. Through the action of the row of liquid discharge ports 706 evenly arranged at the bottom of the feeding cylinder 705 and the squeegee 904, the printing liquid is evenly covered on the feeding roller 6, and thus quantitative and uniform feeding is carried out from the feeding roller 6 to the printing roller 3, ensuring that the printing liquid adheres evenly to the printing roller 3, guaranteeing printing quality, greatly reducing the occurrence of defective products, being convenient to use, and achieving quantitative and uniform liquid supply, reducing waste of resources.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quantitative coating mechanism for printing, comprising a first frame (1) and a second frame (2), characterized in that: At the center of the bottom of the first frame (1) and the second frame (2), a printing roller (3) is provided. Above the printing roller (3), a back roller (4) is provided. On both sides above the back roller (4), conveying rollers (5) are provided. On one side of the printing roller (3), a quantitative coating mechanism is provided, which is used for quantitatively conveying printing liquid to the printing roller (3) to ensure uniform feeding and printing quality. At the bottom of the quantitative coating mechanism, a smear collecting assembly (9) is provided, which is used for smearing and leveling of the quantitative coating mechanism to ensure feeding quality.

2. The quantitative coating mechanism for printing according to claim 1, characterized in that: The quantitative coating mechanism includes a feeding roller (6) and a quantitative mechanism (7). The feeding roller (6) is arranged on one side of the printing roller (3) and is in contact with the printing roller (3). The quantitative mechanism (7) is arranged above the feeding roller (6) and is used for conveying the printing liquid onto the feeding roller (6).

3. The quantitative coating mechanism for printing according to claim 2, characterized in that: The quantitative mechanism (7) includes a storage tank (701), a servo pump (702), a feed pipe (703), a connecting pipe (704), a feeding cylinder (705) and a liquid outlet (706). The feed end of the servo pump (702) is connected to the inside of the storage tank (701) through the feed pipe (703), and the discharge end of the servo pump (702) is connected to the feeding cylinder (705) through the connecting pipe (704). The feeding cylinder (705) is arranged above the feeding roller (6), and a plurality of liquid outlets (706) are equidistantly arranged at the center of the inner cavity bottom of the feeding cylinder (705). The plurality of liquid outlets (706) are used for uniformly distributing the printing liquid inside the feeding cylinder (705) onto the feeding roller (6).

4. A quantitative coating mechanism for printing according to claim 3, characterized in that: The quantitative mechanism (7) further includes a quantitative valve (707), a flow sensor (708) and a feed port (709). The quantitative valve (707) and the flow sensor (708) are arranged on the connecting pipe (704) and are used for quantitatively conveying the printing liquid. The feed port (709) is arranged on the storage tank (701).

5. A quantitative coating mechanism for printing according to claim 3, characterized in that: Both ends of the feeding cylinder (705) are provided with mounting plates (8), and the mounting plates (8) are fixedly installed on the first frame (1) and the second frame (2) by screws.

6. A quantitative coating mechanism for printing according to claim 1, characterized in that: The smear collecting assembly (9) includes an aggregate box (901), a mounting plate (902), a support plate (903) and a scraping plate (904). On both sides of the aggregate box (901), mounting plates (902) are provided. The mounting plates (902) are fixedly installed on the bottom of the first frame (1) and the second frame (2) by screws. The support plate (903) is fixedly installed in the inner cavity of the aggregate box (901), and a scraping plate (904) is installed on the support plate (903) by screws. The scraping plate (904) is in contact with the bottom surface of the feeding roller (6).

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