An ink uniformity structure for a printing machine

Abstract

This utility model discloses a uniform ink coating structure for a printing press. It relates to the field of printing technology and includes: an ink fountain and an ink-spreading roller. The inner wall of the ink fountain is rotatably connected to the outer wall of the ink-spreading roller, and the end face of the ink-spreading roller is rotatably connected to the output end of an external drive component. A coating device is slidably connected to the outer wall of the ink fountain. The coating device works in conjunction with the ink-spreading roller. An inclined plate adheres to the inner wall of the ink fountain to prevent ink splashing, avoiding localized ink shortages or accumulation. A rotating rod drives a circumferentially arranged brush to slide against the ink-spreading roller, comprehensively smoothing the ink and eliminating unevenness. A gear assembly ensures that the brush and ink-spreading roller rotate at the same speed, further improving uniformity. A fixing buckle and a limiting post cooperate to achieve quick adjustment without complex tools. The inclined plate reduces ink leakage, lowers the cleaning frequency, and also prevents the ink from being thrown out by the ink-spreading roller, guiding it back into the ink fountain.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, specifically to a uniform ink coating structure for printing machines. Background Technology

[0002] In the printing industry, printing presses use ink distribution rollers to transfer ink from the ink fountain and apply it to the surface of the printing plate or substrate. If the ink is not applied evenly to the outer wall of the ink distribution roller, it can easily lead to defects in the printed products, such as color deviation, blurry patterns, local ink shortages, or excessively thick ink layers.

[0003] Currently, in terms of ink uniformity control, most traditional printing presses rely solely on the rotation of the ink distribution roller to achieve ink transfer, lacking targeted combing and auxiliary coating components. Local ink accumulation or gaps easily appear on the outer wall of the ink distribution roller, especially when processing inks of different viscosities, where the uniformity problem is more prominent and it is difficult to form an ink film of uniform thickness. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a uniform ink coating structure for printing presses, which solves the problems of uneven coating leading to printing defects and ink splattering waste.

[0006] (II) Technical Solution

[0007] To solve the above problems, this utility model achieves the following technical solution: a uniform ink coating structure for a printing press, comprising: an ink fountain and an ink distribution roller, wherein the inner wall of the ink fountain is rotatably connected to the outer wall of the ink distribution roller, the end face of the ink distribution roller is rotatably connected to the output end of an external drive component, and a coating device is slidably connected to the outer wall of the ink fountain, the coating device coating the ink on the outer wall of the ink distribution roller, the coating device including an inclined plate, a fixing buckle fixedly connected to the outer wall of the inclined plate, and a limit post slidably connected to the inner wall of the fixing buckle, the inclined plate being in close contact with the inner wall of the ink fountain, which can effectively prevent ink splashing caused by the rotation of the ink distribution roller, avoiding local ink shortage or accumulation caused by ink splashing, and laying the foundation for subsequent uniform coating.

[0008] Preferably, the outer wall of the inclined plate is in contact with the inner wall of the ink fountain, the outer wall of the fixing buckle is arranged in a linear array along the outer wall of the inclined plate, and the bottom end of the limiting post is fixedly connected to the top end of the ink fountain.

[0009] Preferably, an arc-shaped plate is fixedly connected to the top of the inclined plate. The arc-shaped plate fixed to the top of the inclined plate further optimizes the ink flow path and helps to collect the small amount of splashed ink.

[0010] Preferably, a rotating rod is rotatably connected to the inner wall of the inclined plate, and a brush is fixedly connected to the outer wall of the rotating rod. The outer wall of the brush is arranged in a circumferential array along the central axis of the rotating rod. The outer wall of the rotating rod rotatably connected to the inner wall of the inclined plate is fixed with the circumferentially arrayed brush, and the end of the brush away from the rotating rod is slidably connected to the outer wall of the ink-spreading roller. During the rotation of the ink-spreading roller, the brush can comb and coat the ink on the roller surface in an all-round and thorough manner, completely eliminating unevenness problems such as streaks and spots on the ink on the roller surface, so that the ink forms a uniform ink film with consistent thickness.

[0011] Preferably, the end of the brush away from the rotating rod is slidably connected to the outer wall of the ink-spreading roller.

[0012] Preferably, gear assemblies are fixedly connected to the outer wall of the rotating rod and the outer wall of the rotating shaft of the ink-distributing roller.

[0013] Beneficial effects

[0014] This invention provides a structure for uniformly coating ink in a printing press. It offers the following advantages:

[0015] This utility model incorporates a coating device that works in conjunction with an ink-spreading roller. An inclined plate adheres to the inner wall of the ink fountain to prevent ink splashing, thus avoiding localized ink shortages or accumulation. A rotating rod drives a circumferentially arranged brush to slide against the ink-spreading roller, comprehensively smoothing the ink and eliminating unevenness. A gear assembly ensures that the brushes and the ink-spreading roller rotate at the same speed, further improving uniformity. A fixing buckle and a limiting post work together to achieve quick adjustment without the need for complex tools. The inclined plate reduces ink leakage and lowers the cleaning frequency. At the same time, it also prevents the ink-spreading roller from splashing out ink, guiding it back into the ink fountain. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the brush of this utility model.

[0019] In the diagram: 1. Ink fountain; 2. Ink roller; 3. Coating device; 30. Inclined plate; 31. Fixing buckle; 32. Limiting post; 33. Arc plate; 34. Rotating rod; 35. Brush; 36. Gear assembly. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example

[0022] Please see Figures 1-3 This utility model provides a technical solution: a uniform ink coating structure for printing machines, comprising:

[0023] Ink fountain 1, ink distribution roller 2, the inner wall of ink fountain 1 is rotatably connected to the outer wall of ink distribution roller 2, the end face of ink distribution roller 2 is rotatably connected to the output end of external drive component, and an applicator 3 is slidably connected to the outer wall of ink fountain 1. The applicator 3 applicates the ink on the outer wall of ink distribution roller 2. When the ink uniform applicator structure of the printing press is working, the initial ink acquisition is completed first through the cooperation of ink fountain 1 and ink distribution roller 2, and then the uniform combing and application of ink is achieved by relying on applicator 3.

[0024] The coating device 3 includes an inclined plate 30. A fixing buckle 31 is fixedly connected to the outer wall of the inclined plate 30. A limiting post 32 is slidably connected to the inner wall of the fixing buckle 31. The outer wall of the inclined plate 30 is in contact with the inner wall of the ink fountain 1. The outer wall of the fixing buckle 31 is arranged in a linear array along the outer wall of the inclined plate 30. The bottom end of the limiting post 32 is fixedly connected to the top end of the ink fountain 1. First, the coating device 3, which is slidably connected to the outer wall of the ink fountain 1, is stably installed through the cooperation of the fixing buckle 31 and the limiting post 32. The fixing buckle 31 is arranged along the outer wall of the inclined plate 30 and is slidably adapted to the limiting post 32 fixed at the top end of the ink fountain 1. The coating device 3 can be quickly fixed by simply sliding the fixing buckle 31 along the limiting post 32 to ensure that it maintains a stable position during operation. The ink roller 2 is rotatably connected to the inner wall of the ink fountain 1. An external driving component drives the ink roller 2 to rotate. During the rotation, the outer wall of the ink roller 2 picks up ink from the ink fountain 1, laying the foundation for subsequent coating.

[0025] An arc-shaped plate 33 is fixedly connected to the top of the inclined plate 30. A rotating rod 34 is rotatably connected to the inner wall of the inclined plate 30. A brush 35 is fixedly connected to the outer wall of the rotating rod 34. The outer wall of the brush 35 is arranged in a circumferential array along the central axis of the rotating rod 34. The end of the brush 35 away from the rotating rod 34 is slidably connected to the outer wall of the ink distribution roller 2. Then, the coating device 3 starts to function. The outer wall of the inclined plate 30 is in close contact with the inner wall of the ink fountain 1. The arc-shaped plate 33 at its top works in conjunction with the inclined plate 30. When the ink distribution roller 2 rotates and causes ink to splash, the inclined plate 30 and the arc-shaped plate 33 can block the splashed ink. At the same time, the inclined plate 30 guides the ink to flow into the ink fountain 1, preventing ink from splashing to other parts of the equipment or being lost, thus reducing ineffective losses.

[0026] Gear assemblies 36 are fixedly connected to the outer wall of the rotating rod 34 and the outer wall of the inner wall of the ink-spreading roller 2. While the ink-spreading roller 2 rotates, the large gear in the gear assembly 36 is fixedly connected to the rotating shaft of the inner wall of the ink-spreading roller 2, and the small gear is fixedly connected to the outer wall of the rotating rod 34. The rotating shaft is linked with the ink-spreading roller 2 through the gear assembly 36, so that the rotating rod 34 and the ink-spreading roller 2 rotate synchronously and in coordination. During the continuous rotation of the ink-spreading roller 2, the synchronously rotating brush 35 will comb the ink on the outer wall of the ink-spreading roller 2 in all directions, disperse the ink locally accumulated on the roller surface, fill the possible ink gaps, and finally form a uniform ink film of consistent thickness on the outer wall of the ink-spreading roller 2, providing a stable ink layer for subsequent printing processes and ensuring uniform color and clear pattern of the printed products.

[0027] As the external drive unit continuously drives the ink distribution roller 2 to rotate, the ink distribution roller 2 with a uniform ink film will come into contact with the ink transfer roller in the printing press. Since the ink film on the surface of the ink distribution roller 2 is uniform, during the contact process, the ink film can be stably and equally transferred to the surface of the ink transfer roller, avoiding the problem of local ink shortage or ink accumulation caused by uneven ink film.

[0028] The printing plate, which has absorbed a uniform ink layer, will adhere to the substrate under the pressure of the impression roller. Under the pressure, the uniform ink layer in the image area of ​​the printing plate will be completely transferred to the surface of the substrate, thus completing the printing operation.

[0029] Next, if the ink transfer roller is used for transition, the ink transfer roller will further transfer the uniform ink film obtained from the ink distribution roller to the image area of ​​the printing plate. The printing plate is pre-engraved with the pattern or text to be printed. Only the image area will absorb the ink layer. And because the ink film is initially uniform, the image area of ​​the printing plate can completely and uniformly absorb the ink layer, ensuring that the ink layer thickness of the image is consistent.

[0030] When the printing press is in use, the ink uniform coating structure first obtains the initial ink through the cooperation of the ink fountain 1 and the ink roller 2, and then relies on the coating device 3 to achieve uniform sorting and coating of the ink.

[0031] First, the coating device 3, which is slidably connected to the outer wall of the ink fountain 1, is stably installed through the cooperation of the fixing buckle 31 and the limiting post 32. The fixing buckle 31 is arranged along the outer wall of the inclined plate 30 and is slidably adapted to the limiting post 32 fixed at the top of the ink fountain 1. The coating device 3 can be quickly fixed by simply sliding the fixing buckle 31 along the limiting post 32, ensuring that it maintains a stable position during operation. The ink roller 2 is rotatably connected to the inner wall of the ink fountain 1. The external drive component drives the ink roller 2 to rotate. During the rotation, the outer wall of the ink roller 2 picks up ink from the ink fountain 1, laying the foundation for subsequent coating.

[0032] Subsequently, the coating device 3 begins to function. The outer wall of the inclined plate 30 is in close contact with the inner wall of the ink fountain 1. The arc plate 33 at its top works in conjunction with the inclined plate 30. When the ink roller 2 rotates and causes ink to splash, the inclined plate 30 and the arc plate 33 can block the splashed ink. At the same time, the inclined plate 30 guides the ink to flow into the ink fountain 1, preventing ink from splashing to other parts of the equipment or being lost, thus reducing ineffective losses.

[0033] While the ink-spreading roller 2 rotates, the large gear in the gear assembly 36 is fixedly connected to the rotating shaft on the inner wall of the ink-spreading roller 2, and the small gear is fixedly connected to the outer wall of the rotating rod 34. The rotating shaft is linked with the ink-spreading roller 2 through the gear assembly 36, so that the rotating rod 34 and the ink-spreading roller 2 rotate synchronously and in coordination. During the continuous rotation of the ink-spreading roller 2, the synchronously rotating brush 35 will comb the ink on the outer wall of the ink-spreading roller 2 in all directions, disperse the ink locally accumulated on the roller surface, fill the possible ink gaps, and finally form a uniform ink film of consistent thickness on the outer wall of the ink-spreading roller 2, providing a stable ink layer for subsequent printing processes, and ensuring uniform color and clear pattern of the printed matter.

[0034] As the external drive unit continuously drives the ink distribution roller 2 to rotate, the ink distribution roller 2 with a uniform ink film will come into contact with the ink transfer roller in the printing press. Since the ink film on the surface of the ink distribution roller 2 is uniform, during the contact process, the ink film can be stably and equally transferred to the surface of the ink transfer roller, avoiding the problem of local ink shortage or ink accumulation caused by uneven ink film.

[0035] The printing plate, which has absorbed a uniform ink layer, will adhere to the substrate under the pressure of the impression roller. Under the pressure, the uniform ink layer in the image area of ​​the printing plate will be completely transferred to the surface of the substrate, thus completing the printing operation.

[0036] Next, if the ink transfer roller is used for transition, the ink transfer roller will further transfer the uniform ink film obtained from the ink distribution roller to the image area of ​​the printing plate. The printing plate is pre-engraved with the pattern or text to be printed. Only the image area will absorb the ink layer. And because the ink film is initially uniform, the image area of ​​the printing plate can completely and uniformly absorb the ink layer, ensuring that the ink layer thickness of the image is consistent.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ink uniformity structure for a printing press, comprising: Ink fountain (1), ink roller (2), characterized in that: The inner wall of the ink fountain (1) is rotatably connected to the outer wall of the ink roller (2), the end face of the ink roller (2) is rotatably connected to the output end of the external drive component, and the outer wall of the ink fountain (1) is slidably connected to the coating device (3), which coats the ink on the outer wall of the ink roller (2). The applicator (3) includes an inclined plate (30), the outer wall of which is fixedly connected with a fixing buckle (31), and the inner wall of the fixing buckle (31) is slidably connected with a limit post (32).

2. The ink uniformity spreading structure for a printing machine according to claim 1, wherein: The outer wall of the inclined plate (30) is in contact with the inner wall of the ink fountain (1), the outer wall of the fixing buckle (31) is arranged in a linear array along the outer wall of the inclined plate (30), and the bottom end of the limiting post (32) is fixedly connected to the top end of the ink fountain (1).

3. The ink uniformity spreading structure for a printing machine according to claim 1, wherein: An arc-shaped plate (33) is fixedly connected to the top of the inclined plate (30).

4. The ink uniformity spreading structure for a printing machine according to claim 1, wherein: The inner wall of the inclined plate (30) is rotatably connected to a rotating rod (34), and the outer wall of the rotating rod (34) is fixedly connected to a brush (35), and the outer wall of the brush (35) is arranged in a circular array along the central axis of the rotating rod (34).

5. The ink uniformity spreading structure for a printing machine according to claim 4, wherein: The end of the brush (35) away from the rotating rod (34) is slidably connected to the outer wall of the ink roller (2).

6. The ink uniformity spreading structure for a printing machine according to claim 4, wherein: Gear assemblies (36) are fixedly connected to the outer wall of the rotating rod (34) and the outer wall of the inner wall of the ink roller (2).

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