Electrostatic ink absorption printing structure

Abstract

The utility model discloses an electrostatic ink absorption printing structure which comprises a rack, a printing roller, an ink fountain, an impressing roller, a conductive rod and an air plate are arranged on the rack, an air outlet is formed in the top of the air plate, an air inlet is formed in the bottom of the air plate, the side face of the air plate is connected with a fan through an air pipe, and the air plate is arranged around the printing roller and the impressing roller in a semi-surrounding state. The printing device is reasonable and ingenious in structural design, the conductive rod uniformly conducts electricity for the impressing roller to generate an electrostatic field, printing ink is efficiently transferred to a printing plate face between the printing roller and the impressing roller, the air plate forms a semi-surrounding structure, the evaporation speed of water vapor around the printing roller is reduced, the printing environment is kept at certain humidity, electrostatic charges in the environment are reduced, and printing quality is improved. And flying ink is avoided, and the printing quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to an electrostatic ink-absorbing printing structure, belonging to the field of printing machinery technology. Background Technology

[0002] In the printing process of packaging products, static electricity is typically generated during printing to efficiently transfer the image to the printing plate. The printing plate or impression roller acquires a static charge through corona discharge, and the static electricity drives the ink transfer. However, this discharge process increases the static charge in the surrounding air, causing instability in the electrostatic field around the printing plate. Furthermore, the open space makes it difficult to precisely control the humidity of the printing environment. When the air is too dry, the static charge increases further, leading to uneven ink distribution during printing, causing ink splatter and reducing print quality. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, this utility model provides an electrostatic ink-absorbing printing structure that ensures the stability of the surrounding environment while performing electrostatic ink absorption, thus preventing ink splatter.

[0004] To achieve this objective, the structure adopted by this utility model is: an electrostatic ink absorption printing structure, including a frame, on which a printing roller, an ink trough, an impression roller, a conductive rod, and an air plate are arranged. The ink trough is located below the printing roller, and the impression roller is located above the printing roller. The conductive rod is in contact with the impression roller and is connected to a corona discharge device to discharge, thereby generating static electricity on the impression roller. The air plate is arranged in a semi-enclosed state around the printing roller and the impression roller.

[0005] The frame is provided with a first guide roller, an electrostatic eliminator is provided above the first guide roller, a second guide roller is provided above the electrostatic eliminator, and an ink trough is provided diagonally above the second guide roller.

[0006] The top of the air plate is a horizontal plate, and a vertical plate is connected to one side of the bottom of the horizontal plate to form an inverted L-shaped structure. The two sides of the air plate are connected to the frame. The horizontal plate and the vertical plate are hollow plate structures. An air outlet is set on the horizontal plate and an air inlet is set at the bottom of the vertical plate. The air plate is connected to the fan through an air duct. A humidifying block is set on the air plate, and a water tank or wet sponge is set inside the humidifying block.

[0007] A third guide roller is provided above the impression roller, and a UV curing lamp is provided above the third guide roller.

[0008] The two ends of the impression roller are connected to the frame via cylinders, and the two ends of the conductive rod are connected to the frame via rotating shafts. The conductive rod and the impression roller are parallel to each other, and conductive bars are evenly arranged on the conductive rod, which rests on the impression roller.

[0009] Its beneficial effects are: the structure of this utility model is reasonable and ingenious. The conductive rod conducts electricity evenly to the impression roller to generate an electrostatic field, which enables the ink to be efficiently transferred to the printing plate between the printing roller and the impression roller. The semi-enclosed structure formed by the air plate reduces the evaporation rate of water vapor around the printing roller, keeps the printing environment at a certain humidity, reduces the static charge in the environment, avoids the generation of ink splatter, and ensures printing quality. Attached Figure Description

[0010] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a side view of the structure of the air deflector. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0014] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components; a fixed connection can be welding or adhesive bonding. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0016] like Figure 1The electrostatic ink-absorbing printing structure shown includes a frame 1, on which a printing roller 7, an ink trough 9, an impression roller 10, a conductive rod 8, and an air deflector 2 are mounted. The ink trough 9 is positioned below the printing roller 7, and the impression roller 10 is positioned above it. The conductive rod 8 is in contact with the impression roller 10 and is connected to a corona discharge device to generate static electricity on the impression roller 10. When the printing material passes between the printing roller 7 and the impression roller 10, the generated static electricity causes the ink on the printing roller to be efficiently adsorbed onto the printing material. The air deflector 2 is positioned in a semi-enclosed manner around the printing roller 7 and the impression roller 10, reducing water vapor evaporation and airflow around the printing roller 7. This maintains a certain level of humidity in the environment around the printing roller 7, except for the impression roller 10, reducing static electricity in the air and preventing ink splatter from the printing material, which would affect the printing effect.

[0017] The frame 1 is equipped with a first guide roller 4, an electrostatic eliminator 5 is positioned above the first guide roller 4, a second guide roller 7 is positioned above the electrostatic eliminator 5, and an ink trough 9 is positioned above the second guide roller 7. The electrostatic eliminator 5 eliminates static electricity on the surface of the printing material through conductive or high-voltage discharge. The printing material passes sequentially through the first guide roller 4, the electrostatic eliminator 5, and the second guide roller 7 before entering between the printing roller 7 and the impression roller 10, thus eliminating static electricity on its surface and preventing dust contamination and uneven electrostatic field distribution that could lead to blurry printing.

[0018] like Figure 2 As shown, the top of the air plate 2 is a horizontal plate 21, and a vertical plate 22 is connected to the bottom of one side of the horizontal plate 21 to form an inverted L-shaped structure. The printing roller 7 and the impression roller 10 are wrapped in the inverted L-shaped structure. The two sides of the air plate 2 are connected to the frame 1. The horizontal plate 21 and the vertical plate 22 are hollow plate structures. An air outlet 23 is provided on the horizontal plate 21, and an air inlet 24 is provided at the bottom of the vertical plate 22. The air outlet 23 and the air inlet 24 are long strip-shaped groove structures that communicate with the interior of the air plate 2. The air plate 2 is connected to the fan 3 through an air duct. After the fan 3 is started, the air in the environment enters through the air inlet 24. The air is drawn in and blown out from the air outlet 23. A humidifying block 12 is installed on the air plate 2. The humidifying block 12 contains a water tank or wet sponge. The circulating air increases the humidity of the airflow after passing through the humidifying block 12 and is blown back into the printing environment, so as to maintain a certain humidity in the printing environment and reduce the generation of static electricity in the air. At the same time, a hygrometer is installed on the frame 1. The hygrometer is connected to the fan 3 through the control equipment. By controlling the transport speed of the fan 3, the airflow speed of the air outlet 23 is controlled, and the humidity in the environment is kept within a suitable range, further avoiding the deterioration of printing quality by disordered static electricity field.

[0019] One or more third guide rollers 11 are disposed above the impression roller 10, and a UV curing lamp 13 is disposed above the third guide roller 11. The UV curing lamp 13 enables the ink on the printing material to dry quickly.

[0020] The two ends of the impression roller 10 are connected to the frame 1 via cylinders to control the lifting and lowering of the impression roller 10. The two ends of the conductive rod 8 are connected to the frame 1 via rotating shafts. The conductive rod 8 is parallel to the impression roller 10. Conductive rods are evenly distributed on the conductive rod 8. The conductive rods rest on the impression roller 10 so that they can rotate with the lifting and lowering of the impression roller 10 and keep the conductive rods in contact with the impression roller 10 at all times. The evenly distributed conductive rods can make the electrostatic field on the impression roller 10 uniformly distributed.

[0021] This invention utilizes the rational arrangement of the air plate 2, the static eliminator 5, and the conductive rod 8 to keep the electrostatic field that promotes efficient printing within the range of the impression roller 10, and to stably control the humidity of the environment and the electrostatic field of other parts, thus avoiding the impact of unnecessary static electricity on the printing effect.

[0022] Based on the above description and inspired by this utility model, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An electrostatic ink-absorbing printing structure, comprising a frame (1), characterized in that, The frame (1) is provided with a printing roller (7), an ink trough (9), an impression roller (10), a conductive rod (8), and an air plate (2). The ink trough (9) is located below the printing roller (7), and the impression roller (10) is located above the printing roller (7). The conductive rod (8) is in contact with the impression roller (10), and the conductive rod (8) is connected to a corona discharge device to discharge, so that the impression roller (10) generates static electricity. The air plate (2) is arranged in a semi-enclosed state around the printing roller (7) and the impression roller (10).

2. The electrostatic ink-absorbing printing structure according to claim 1, characterized in that, The frame (1) is provided with a first guide roller (4), an electrostatic eliminator (5) is provided above the first guide roller (4), a second guide roller (6) is provided above the electrostatic eliminator (5), and an ink trough (9) is provided diagonally above the second guide roller (6).

3. The electrostatic ink-absorbing printing structure according to claim 1, characterized in that, The top of the air plate (2) is a horizontal plate (21), and the bottom of one side of the horizontal plate (21) is connected to a vertical plate (22) to form an inverted L-shaped structure. The two sides of the air plate (2) are connected to the frame (1). The horizontal plate (21) and the vertical plate (22) are hollow plate structures. An air outlet (23) is provided on the horizontal plate (21), and an air inlet (24) is provided at the bottom of the vertical plate (22). The air plate (2) is connected to the fan (3) through the air duct. A humidifying block (12) is provided on the air plate (2), and a water tank or wet sponge is provided inside the humidifying block (12).

4. The electrostatic ink-absorbing printing structure according to claim 1, characterized in that, A third guide roller (11) is provided above the impression roller (10), and a UV curing lamp (13) is provided above the third guide roller (11).

5. The electrostatic ink-absorbing printing structure according to claim 1, characterized in that, The two ends of the impression roller (10) are connected to the frame (1) via cylinders, and the two ends of the conductive rod (8) are connected to the frame (1) via rotating shafts. The conductive rod (8) is parallel to the impression roller (10), and conductive rods are evenly arranged on the conductive rod (8), with the conductive rods resting on the impression roller (10).

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