Ink misting prevention device and flexible printing machine

Abstract

The utility model belongs to the technical field of printing, and discloses an ink flying prevention device and a flexible printing machine. A stand column of the ink flying prevention device can be connected with a shell of the flexible printing machine, the stand column extends in the first direction, and a printing roller extends in the second direction. The baffles are arranged at intervals in the first direction and located on the side, away from the inking rubber roller, of the printing roller, in the third direction, the orthographic projection of any baffle is partially overlapped with the orthographic projection of the adjacent baffle, and the baffles are arranged in a step shape in the first direction to form a multi-stage blocking structure. The extending direction from the first end to the second end of the baffle and the extending direction from the first end to the second end of the stand column form an acute angle, so that the sliding direction of the printing ink along the baffle and the vertical falling direction of the printing ink form an obtuse angle, and the first direction, the second direction and the third direction are perpendicular. The device changes the sliding track of the printing ink, so that the printing ink slides at a specific angle along the baffle, accumulation is avoided, the atomization phenomenon is reduced, the cleaning and maintenance frequency of the flexible printing machine is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, and in particular to an anti-ink-spraying device and a flexible printing press. Background Technology

[0002] In the field of flexographic printing, printing rollers often rely on fixed-angle baffles to prevent ink splattering, but this exposes significant drawbacks when using high-viscosity ultraviolet (UV) inks. UV inks typically have a viscosity as high as 2000-5000 cP, and during high-speed printing, they are prone to severe splattering due to shear forces. Furthermore, the baffle surface lacks an oleophobic coating, causing ink to adhere and accumulate, resulting in irregular flow and exacerbating the fogging phenomenon.

[0003] In existing technologies, some solutions incorporate vacuum adsorption holes at the bottom of the printing roller, using negative pressure adsorption technology to fix the ink. However, this system requires continuous operation of a high-power vacuum pump, significantly increasing energy costs. Furthermore, the adsorption holes are easily clogged by ink particles, requiring maintenance 2-3 times daily, severely impacting production efficiency. Other solutions employ electrostatic field control for ink atomization; however, the polar components in UV inks, such as photoinitiators and oligomers, cause fluctuations in electric field stability, and insufficient insulation design of the high-voltage electrodes poses safety hazards, limiting the widespread application of this technology. Utility Model Content

[0004] The purpose of this invention is to provide an anti-ink splatter device and a flexible printing machine to solve the problems of ink splattering and atomization caused by the characteristics of ink itself and high-speed printing during the printing process, so as to improve printing quality and production efficiency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An ink-splash prevention device is provided to prevent ink from splashing from the printing rollers of a flexographic printing press. The ink-splash prevention device includes:

[0007] The column is connected to the housing of the flexographic printing press, and the column extends in a first direction while the printing roller extends in a second direction.

[0008] Multiple baffles are spaced apart on the column along the first direction, and the multiple baffles are located on the side of the printing roller away from the ink roller. Along the third direction, the orthographic projection of any baffle overlaps with the orthographic projections of the two adjacent baffles. The multiple baffles are arranged in a stepped manner along the first direction to form a multi-level blocking structure. The extension direction from the first end to the second end of the baffle forms an acute angle with the extension direction from the first end to the second end of the column, so that the sliding direction of the ink along the baffle forms an obtuse angle with the vertical falling direction of the ink. The first direction, the second direction, and the third direction are perpendicular to each other.

[0009] As an alternative to ink-repellent devices, the outer surface of the baffle is coated with polytetrafluoroethylene or fluorosilicone nanoparticles.

[0010] As an optional solution for preventing ink splatter, the width B of the baffle is 5-10mm.

[0011] As an alternative solution for the anti-ink-splashing device, the direction in which the ink slides along the baffle forms an angle A with the vertical direction in which the ink falls, and the angle A is greater than or equal to 110 degrees and less than 180 degrees.

[0012] As an alternative solution to the anti-ink spray device, the anti-ink spray device includes two spaced-apart columns, and a plurality of baffles are connected to the two columns and located between the two columns.

[0013] As an optional solution for the anti-ink spray device, the anti-ink spray device also includes multiple fastening nuts, the two columns are provided with multiple mounting holes, and the opposite ends of the baffle are provided with connecting parts. The connecting parts are respectively passed through the mounting holes corresponding to the columns and are threadedly connected to the fastening nuts so that the baffle is clamped between the two columns.

[0014] As an alternative to the ink-repellent device, the column is detachably connected to the housing.

[0015] As an alternative to the ink-repellent device, the ink-repellent device also includes an ink collection box with a U-shaped groove whose opening faces the baffle to catch the dripping ink.

[0016] As an alternative solution to the anti-ink splatter device, the anti-ink splatter device also includes a negative pressure adsorption component, which is used to form a negative pressure area between the baffle and the ink collection box to adsorb ink to the ink collection box.

[0017] A flexible printing press includes a housing, a printing roller, an inking roller, and an anti-ink-splash device. The inking roller and the printing roller are rotatably connected to the housing. The anti-ink-splash device is connected to the housing and is located on the side of the printing roller opposite to the inking roller.

[0018] Beneficial effects:

[0019] This invention provides an anti-ink splatter device and a flexographic printing press. The anti-ink splatter device includes a column and multiple baffles. The column is securely connected to the housing of the flexographic printing press and extends along a first direction, while the printing roller extends along a second direction. The column is perpendicular to the printing roller and provides a stable support base for the installation of the multiple baffles, ensuring that the baffles are precisely positioned to effectively block ink splatter. The multiple baffles are spaced apart along the first direction, and along a third direction, the orthographic projections of adjacent baffles overlap. The multiple baffles are arranged in a stepped manner along the first direction to form a multi-level blocking structure, which can intercept splattered ink multiple times. During the printing process, the direction of ink splatter is unpredictable and has a certain speed. The multi-level blocking structure formed by the multiple baffles greatly reduces the probability of ink splattering outside the printing area. The extension direction from the first end to the second end of the baffle forms an acute angle with the extension direction from the first end to the second end of the column, making the ink sliding direction an obtuse angle with the vertical falling direction. This design changes the ink sliding trajectory. Ink that would otherwise fall directly and accumulate in the printing area, causing contamination, will slide off at a specific angle along the baffle, preventing ink buildup and reducing the intense interaction between the ink and air, further minimizing ink atomization. Simultaneously, the multi-stage baffle structure and the special ink sliding method reduce ink contamination of the working environment, decrease the frequency of cleaning and maintenance of the flexographic printing press, reduce downtime for maintenance, and thus improve production efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the anti-ink-spraying device and flexible printing press provided in this embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the flexible printing machine provided in this embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the anti-ink spray device provided in this embodiment of the utility model;

[0023] Figure 4 This is a cross-sectional schematic diagram of the anti-ink spray device provided in this embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the baffle and fastening nut provided in an embodiment of the present utility model.

[0025] In the picture:

[0026] 101. Housing; 102. Printing roller; 103. Inking roller; 104. Anilox roller; 105. Transmission assembly; 106. Ink reservoir; 107. Ink return tube; 108. Paper feed assembly; 1051. Motor; 1052. First gear; 1053. Second gear;

[0027] 1. Columns;

[0028] 2. Baffle; 21. Connecting part;

[0029] 3. Tighten the nuts;

[0030] 4. Ink collection box; 41. U-shaped groove. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of the device. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper" and "lower," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] This embodiment provides a flexible printing machine, such as Figure 1 and Figure 2As shown, the flexographic printing press includes a housing 101, a printing roller 102, an inking roller 103, and an anti-ink-splatter device. Both the inking roller 103 and the printing roller 102 are rotatably connected to the housing 101. The anti-ink-splatter device is connected to the housing 101 and located on the side of the printing roller 102 opposite to the inking roller 103. The printing roller 102 is used for printing. The inking roller 103, through contact transmission, adjusts the ink amount in real time according to actual printing needs, ensuring that the ink level on the surface of the printing roller 102 is always maintained at a suitable level, guaranteeing clear printing patterns and uniform color. Printing is achieved through the rotational cooperation of the inking roller 103 and the printing roller 102. The anti-ink-splatter device prevents ink splatter during the printing process, ensuring the normal operation of the printing work and a clean working environment.

[0036] Furthermore, such as Figure 2 As shown, the flexographic printing press also includes an anilox roller 104, a transmission assembly 105, an ink reservoir 106, an ink return tube 107, and a paper feed assembly 108. The anilox roller 104 is rotatably connected to the housing 101. The transmission assembly 105 enables the rotation of the printing roller 102, the inking roller 103, and the anilox roller 104. The ink reservoir 106 is connected to the housing 101 to supply ink for printing. One end of the ink return tube 107 is connected to an anti-ink-splash device, and the other end is connected to the ink reservoir 106, responsible for returning and recycling excess ink, achieving ink recycling. The paper feed assembly 108 is connected to the housing 101 and is located below the anti-ink-splash device. The anilox roller 104 quantitatively adsorbs ink through its uniformly distributed cells, ensuring the accuracy and stability of ink application. During rotation, the anilox roller 104 precisely transfers the adsorbed quantitative ink to the closely fitted printing roller 102. The printing roller 102, with its specific surface texture or pattern, efficiently receives ink from the anilox roller 104. During this process, the printing roller 102 also engages with the inking roller 103, which adjusts and replenishes the ink level as needed to ensure the ink level on the printing roller 102 remains optimal. Throughout this process, the rotational speeds of the anilox roller 104 and the printing roller 102, as well as the inking roller 103 and the printing roller 102, must be strictly matched. The transmission assembly 105 plays a crucial role here, cleverly connecting the roller shafts and precisely controlling the speed difference between the anilox roller 104 and the printing roller 102, and between the inking roller 103 and the printing roller 102, ensuring precise speed matching of each roller during printing. The ink reservoir 106, as the ink storage container, continuously supplies ink to the entire inking system, ensuring the continuity of printing operations. The paper feed assembly 108, located at the beginning of the flexographic printing press, precisely feeds the paper, ensuring stable paper positioning and smooth transport during printing, providing a reliable foundation for high-quality printing. These components work together to enable flexographic printing presses to complete printing tasks efficiently and accurately, meeting diverse printing needs.

[0037] Specifically, such as Figure 2As shown, the transmission assembly 105 includes a motor 1051, a first gear 1052, a second gear 1053, and a third gear (not shown). The motor 1051 is mounted on the housing 101, and its output end is connected to one end of the inking roller 103. The other end of the inking roller 103 is connected to the second gear 1053. One end of the printing roller 102 is equipped with the first gear 1052, which meshes with the second gear 1053. One end of the anilox roller 104 is provided with a third gear, which meshes with the first gear 1052. When the motor 1051 operates, power is transmitted sequentially, simultaneously driving the inking roller 103, the printing roller 102, and the anilox roller 104 to rotate, ensuring that all components work together. Furthermore, the paper feeding assembly 108 is prior art, and its specific composition will not be described in detail here.

[0038] like Figure 1 , Figures 3-5 As shown, the anti-ink-splash device is used to prevent ink from splashing onto the printing roller 102 of a flexographic printing press. The anti-ink-splash device includes a column 1 and multiple baffles 2. The column 1 can be connected to the housing 101 of the flexographic printing press, and the column 1 extends along a first direction, while the printing roller 102 extends along a second direction. The multiple baffles 2 are spaced apart on the column 1 along the first direction, and the multiple baffles 2 are located on the side of the printing roller 102 away from the inking roller 103. Along a third direction, the orthographic projection of any baffle 2 overlaps with the orthographic projection of its two adjacent baffles 2. The multiple baffles 2 are arranged in a stepped manner along the first direction to form a multi-level blocking structure. The extension direction from the first end to the second end of the baffle 2 forms an acute angle with the extension direction from the first end to the second end of the column 1, so that the direction in which the ink slides along the baffle 2 forms an obtuse angle with the vertical direction of the ink falling. The first direction, the second direction, and the third direction are perpendicular to each other.

[0039] The anti-ink-splash device has a column 1 securely connected to the flexible printing press housing 101, with the column 1 extending along a first direction and the printing roller 102 extending along a second direction. The column 1 and the printing roller 102 are perpendicular, providing a stable support base for the installation of multiple baffles 2, ensuring that the baffles 2 are precisely positioned to effectively block ink splashes. Multiple baffles 2 are spaced apart along the first direction (the length direction of the column 1) and extend along the second direction. Along the third direction, the orthographic projections of adjacent baffles 2 overlap, and the multiple baffles 2 are arranged in a stepped manner along the first direction to form a multi-level blocking structure, which can intercept splashed ink multiple times. During printing, the direction of ink splashing is unpredictable and has a certain speed. The multi-level blocking structure formed by the multiple baffles 2 greatly reduces the probability of ink splashing outside the printing area. The extension direction from the first end to the second end of the baffle 2 forms an acute angle with the extension direction from the first end to the second end of the column 1, making the ink sliding direction an obtuse angle with the vertical falling direction. This design changes the ink's sliding trajectory. Ink that would otherwise fall directly and accumulate in the printing area, causing contamination, will slide off at a specific angle along baffle 2, preventing ink buildup and reducing the intense interaction between ink and air, further minimizing ink atomization. Simultaneously, the multi-stage blocking structure and the special ink sliding method reduce ink contamination of the working environment, decrease the frequency of cleaning and maintenance of the flexographic printing press, reduce downtime for maintenance, and thus improve production efficiency.

[0040] Specifically, such as Figure 4 As shown, to prevent ink splattering during flexographic printing, five baffles 2 are installed according to the areas requiring splatter prevention. The five baffles 2 are arranged sequentially from top to bottom, as follows: The first baffle is installed vertically to initially block direct ink splattering. The second baffle extends from its first end to its second end at an acute angle to the vertical upward direction. Spatially, the second end of the second baffle is closer to the first baffle, and the first end is further away from the first baffle. This arrangement alters the path and trajectory of ink splattering, preventing localized ink accumulation and reducing the intense interaction between ink and air, further minimizing ink atomization. In the third, fourth, and fifth baffles, the extension direction from the first end to the second end also forms an acute angle to the vertical upward direction, but their specific angles do not need to be the same as the second baffle; each is installed at a suitable acute angle. These baffles further alter the ink splash path and sliding trajectory, continuously preventing ink accumulation, reducing the intense interaction between ink and air, and minimizing ink atomization from multiple directions and levels, thus preventing ink splashing and ensuring a clean working environment and operator safety. When ink splashes onto the first baffle, it slides down the remaining baffles 2 in a stepped trajectory, ultimately allowing the ink to be guided and processed more systematically.

[0041] It is worth noting that the number of baffles 2 can be set according to the area requiring splash protection, and can be 3, 4, or 5; there is no specific limitation on the exact number. The extension direction from the first end to the second end of the first baffle can also form an acute angle with the vertical upward direction. However, in the specific embodiment, the first baffle is set vertically. In fact, the first baffle can be installed either vertically or at an acute angle to the vertical upward direction. When installed vertically, it can initially block direct ink splashing, laying the foundation for subsequent protection. When installed at an acute angle, its working principle is similar to other baffles 2 at acute angles; it can initially block ink splashing while changing the direction of ink movement, allowing the ink to enter the sliding trajectory guided by the subsequent baffles 2 more quickly, optimizing the ink guidance and processing flow, and reducing ink accumulation on its surface. Therefore, in practical applications, the installation angle of the first baffle can be flexibly selected based on the specific printing work scenario, the degree and direction of ink splashing, etc., to achieve the best ink splash protection effect.

[0042] Furthermore, the outer surface of the baffle 2 is coated with polytetrafluoroethylene (PTFE) or fluorosilicone nanoparticles. PTFE or fluorosilicone nanoparticles have low surface energy, making it difficult for ink to adhere, thus preventing accumulation and reducing cleaning difficulty; they also have strong chemical stability, resisting ink corrosion and extending the life of the baffle 2; they can also reduce surface friction, allowing ink to slide smoothly and optimizing the sliding trajectory; in addition, they reduce the interaction between ink and air, thereby reducing atomization, improving the working environment, and enhancing printing quality.

[0043] Furthermore, such as Figure 4 and Figure 5 As shown, the width B of baffle 2 is 5-10mm. This width range can effectively block splashed ink. When the width is sufficient, baffle 2 has a large contact area with the splashed ink, which can effectively intercept the ink and prevent it from splashing out of the working area. At the same time, the appropriate width helps to guide the ink to form a stepped sliding trajectory, so that the ink slides sequentially from one baffle 2 to the next baffle 2, avoiding ink splashing and accumulation everywhere. A width of 5-10mm will not occupy too much space inside the flexographic printing press, ensuring that the layout of various components inside the printing press is compact and reasonable.

[0044] like Figure 4 As shown, the direction in which the ink slides along baffle 2 forms an angle A with the direction of its vertical descent. Angle A is greater than or equal to 110 degrees and less than 180 degrees. This angle range lengthens the ink's sliding path, preventing localized accumulation and allowing the ink to disperse and slide. It also reduces violent collisions between the ink and air, lowering the degree of atomization and improving the environment and printing quality. Furthermore, it facilitates the ink sliding in the expected direction, increasing the recycling rate. Specifically, angle A can be 110 degrees, 120 degrees, 130 degrees, 140 degrees, 150 degrees, etc.

[0045] like Figure 1 and Figure 3 As shown, the anti-ink splash device includes two spaced-apart columns 1, with multiple baffles 2 connected to the two columns 1 and located between them. The two columns 1 enhance the stability of the connection with the multiple baffles 2, ensuring that when ink splashes onto the baffles 2, the baffles 2 remain stable and do not shake or shift due to ink impact, thus continuously and effectively blocking ink splashes.

[0046] like Figure 5 As shown, the anti-ink splatter device also includes multiple fastening nuts 3. The two columns 1 have multiple mounting holes (not shown). Each end of the baffle 2 has a connecting part 21, which passes through the corresponding mounting hole of the column 1 and is threadedly connected to the fastening nut 3, so that the baffle 2 is clamped between the two columns 1. By threading the connecting part 21 of the baffle 2 to the mounting hole of the column 1 with the fastening nut 3, the baffle 2 is securely clamped between the two columns 1. During printing, ink splatter will exert a certain impact force on the baffle 2. This stable connection method ensures that the baffle 2 will not loosen or shift due to ink impact, guaranteeing the stability and reliability of the anti-ink splatter device and enabling it to continuously and effectively block ink splatter. Using the fastening nut 3 connection method, the installation process is simple and convenient; simply insert the connecting part 21 of the baffle 2 into the mounting hole of the column 1 and then tighten the nut. When cleaning, replacement, or maintenance of the baffle 2 is required, it can also be easily disassembled, reducing maintenance costs and time costs. This connection method also allows for convenient adjustment of the angle of the baffle 2. Operators can flexibly adjust the angle of the baffle 2 according to actual printing needs and ink splatter conditions to achieve the best anti-ink splatter effect.

[0047] Specifically, the number of mounting holes on each column 1 is the same as the number of baffles 2, and the number of fastening nuts 3 is twice the number of baffles 2. For example, if three baffles 2 are installed, then each column 1 will have three mounting holes and be equipped with six fastening nuts 3.

[0048] In this embodiment, the column 1 and the housing 101 are detachably connected. After long-term use, components such as the column 1 and the baffle 2 of the anti-ink-splash device may experience wear, damage, or excessive ink contamination. The detachable connection between the column 1 and the housing 101 allows operators to easily remove the column 1 from the housing 101 for thorough cleaning, repair, or replacement of the column 1 and the connected baffle 2. This significantly reduces maintenance and repair time for the flexographic printing press, minimizes downtime due to malfunctions, and improves production efficiency. Specifically, the column 1 and the housing 101 can be connected by bolts, snap-fit ​​connections, or magnetic attachments, among other detachable methods.

[0049] like Figure 4As shown, the anti-splash ink device also includes an ink collection box 4, which has a U-shaped groove 41. The opening of the U-shaped groove 41 faces the baffle 2 to catch dripping ink. The U-shaped groove 41 serves to collect and temporarily store ink, preventing it from spilling randomly and providing a concentrated area for subsequent ink processing. Specifically, the U-shaped groove 41 is connected to the ink storage box 106 via a return ink pipe 107 to achieve ink recycling and reduce ink waste.

[0050] Furthermore, the anti-ink-splash device also includes a negative pressure adsorption component, which creates a negative pressure area between the baffle 2 and the ink collection box 4 to adsorb ink into the ink collection box 4. The purpose of this negative pressure adsorption component is to adsorb ink into the ink collection box 4 by utilizing the adsorption force generated by the pressure difference. It accelerates the flow of ink from the baffle 2 to the ink collection box 4, improving the efficiency of ink collection.

[0051] Specifically, the negative pressure adsorption assembly includes an air source, an adsorption component, a control component, and connecting pipes. The adsorption component is connected to the air source via the connecting pipes, and the control component is electrically connected to the air source. The adsorption component is installed near the ink dripping path. During operation, the control component controls the air source to create negative pressure, causing the adsorption component to suck in the dripping ink. The ink then enters the ink collection box 4 through the connecting pipes. The open U-shaped groove 41 allows communication with the outside atmosphere, maintaining pressure balance and ensuring smooth adsorption. While the adsorption range of the adsorption component is typically limited, the U-shaped groove 41 has a larger opening area, covering a larger area and more effectively catching ink dripping from different locations. This improves ink collection efficiency and reduces the possibility of ink leakage. The air source generates negative pressure to power the ink adsorption; a vacuum pump or negative pressure fan can be used. The adsorption component, installed near the ink dripping path, directly adsorbs the dripping ink; a suction nozzle or adsorption plate can be selected according to actual needs. The control component, electrically connected to the air source, controls the operation of the air source and can use a relay control circuit or a programmable logic controller (PLC).

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A fly ink prevention device for preventing fly ink of a printing roller (102) of a flexographic printing machine, characterized in that, The ink flying prevention device comprises: a column (1) capable of being connected with a housing (101) of the flexible printer, and the column (1) extends along a first direction, and the printing roller (102) extends along a second direction; a plurality of baffles (2) are arranged on the column (1) in the first direction, and the plurality of baffles (2) are located on a side of the printing roller (102) away from the inking roller (103), and along a third direction, the orthogonal projection of any baffle (2) partially overlaps the orthogonal projection of its two adjacent baffles (2), and the plurality of baffles (2) are arranged in a stepped manner along the first direction to form a multi-stage blocking structure, and the extension direction of the first end to the second end of the baffle (2) forms an acute angle with the extension direction of the first end to the second end of the column (1), so that the sliding direction of the ink along the baffle (2) forms an obtuse angle with the vertical falling direction of the ink, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The anti-dripping device according to claim 1, characterized in that The outer surface of the baffle (2) is coated with polytetrafluoroethylene or fluorosilicon nano.

3. The device of claim 1, wherein, The width B of the baffle (2) is 5-10mm.

4. The device of claim 1, wherein, The sliding direction of the ink along the baffle (2) forms an angle A with the vertical falling direction of the ink, and the angle A is greater than or equal to 110 degrees and less than 180 degrees.

5. The device of claim 1, wherein, The ink flying prevention device comprises two spaced apart columns (1), and the plurality of baffles (2) are connected with the two columns (1) and located between the two columns (1).

6. The device of claim 5, wherein the at least one of the first and second arms is configured to move in a direction that is substantially perpendicular to the direction of movement of the first and second arms. The ink flying prevention device further comprises a plurality of fastening nuts (3), and the two columns (1) are provided with a plurality of mounting holes, and the opposite ends of the baffle (2) are provided with connecting parts (21), and the connecting parts (21) are respectively provided through the mounting holes of the columns (1), and are threadedly connected with the fastening nuts (3), so that the baffle (2) is clamped between the two columns (1).

7. A device according to any one of claims 1 to 6, wherein The column (1) is detachably connected with the housing (101).

8. A device according to any one of claims 1 to 6, wherein The ink flying prevention device further comprises an ink collecting box (4), and the ink collecting box (4) is provided with a U-shaped groove (41), and the opening of the U-shaped groove (41) faces the baffle (2) to receive the dripping ink.

9. The device of claim 8, wherein, The ink flying prevention device further comprises a negative pressure adsorption assembly for forming a negative pressure area between the baffle (2) and the ink collecting box (4) to adsorb the ink to the ink collecting box (4).

10. A flexographic printing press characterized by, The ink flying prevention device comprises a housing (101), a printing roller (102), an inking roller (103) and the ink flying prevention device according to any one of claims 1-9, and the inking roller (103) and the printing roller (102) are rotatably connected with the housing (101), and the ink flying prevention device is connected with the housing (101) and located on a side of the printing roller (102) away from the inking roller (103).

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