Rubber roller

Abstract

The utility model discloses a rubber roller which comprises a roller core and a rubber layer compounded on the surface of the roller core, the surface of the rubber layer is provided with a plurality of long-strip-shaped grooves, the grooves tend to be arranged in the same direction on the surface of the rubber layer, and the long edge direction of the grooves tends to be in the axial direction of the rubber roller. After the rubber roller carries ink, the ink adheres stably, and the problem that part of the ink flows out of the groove along with rotation of the rubber roller, and the ink carrying amount is reduced is solved; in addition, the edge of the groove can puncture bubbles in the ink fountain in the ink carrying process, the problem that the bubbles are transferred to the anilox roller is effectively avoided, and the printing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber rollers, in particular to a rubber roller. Background Art

[0002] Flexographic printing, a type of letterpress printing process, uses a flexible printing plate and transfers ink via an anilox roller. The image on the flexographic plate is raised, and during printing, the anilox roller evenly applies a thick layer of ink to the image. Then, under pressure from the impression roller, the ink layer is transferred from the image to the surface of the substrate, forming a clear image. During the flexographic printing process, the ink must be transferred from the ink tank to the anilox roller via an ink roller. However, the rubber ink rollers used in the prior art have insufficient ink capacity and are prone to transferring bubbles from the ink tank to the anilox roller during the ink transfer process, resulting in bubble defects in the printed image. Utility Model Content

[0003] The purpose of the utility model is to provide a rubber roller, which overcomes the shortcomings of the prior art.

[0004] In order to solve the above problems, the technical solutions adopted by the present invention are as follows:

[0005] A rubber roller comprising a roller core and a rubber layer laminated to the surface of the roller core, wherein the surface of the rubber layer has a plurality of elongated grooves, the grooves tending to be arranged in the same direction on the surface of the rubber layer, and the long sides of the grooves tending to be in the axial direction of the rubber roller;

[0006] The length of the groove is 3mm-20mm, the width of the groove is 1mm-2.5mm, the depth of the groove is 0.05mm-0.5mm, and the edge thickness of the groove is 0.05mm-0.2mm.

[0007] Furthermore, the rubber layer is made of rubber material, and the thickness of the rubber layer is not less than 2 mm.

[0008] Furthermore, the roller core includes an inner roller core and an outer roller core, the rubber layer is compounded on the surface of the outer roller core, the outer roller core is a hollow cylindrical structure, there are two inner roller cores, and the two inner roller cores are fixedly installed at both ends of the outer roller core.

[0009] Furthermore, the outer roller core is made of aluminum alloy, and the inner roller core is made of stainless steel.

[0010] Furthermore, the hardness of the rubber layer ranges from 30A to 80A Shore hardness.

[0011] Furthermore, the edge of the groove is an irregular ridge-shaped structure.

[0012] Furthermore, the edge of the groove is a regular convex ridge structure.

[0013] Compared with the prior art, the implementation effects of the present invention are as follows:

[0014] 1. The rubber roller can effectively increase the ink carrying capacity, and the long side direction of the groove tends to the axial direction of the rubber roller, so that after the rubber roller is loaded with ink, the ink adhesion is stable, and part of the ink will not flow out of the groove as the rubber roller rotates, causing the ink carrying capacity to decrease; in addition, the edge of the groove can puncture the bubbles in the ink tank during the ink carrying process, effectively avoiding the problem of bubbles being transferred to the anilox roller, and improving the printing effect.

[0015] 2. The rubber roller uses a hollow aluminum alloy as the outer roller core and installs a stainless steel inner roller core at both ends, which effectively reduces the weight of the rubber roller. The installation of the inner roller core also improves the durability of the rubber roller during use.

[0016] 3. Since the rubber roller is driven by the anilox roller to rotate, and the surface of the rubber roller has multiple grooves, which increases the roughness of the surface of the rubber roller, when the rubber roller transfers the ink, it will not rotate relative to the anilox roller, making the rotation of the rubber roller more stable during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 It is a cross-sectional view of the utility model;

[0020] Figure 4 Schematic diagram of the arrangement of regular long strip structure grooves.

[0021] Explanation of the accompanying reference numerals: 1. outer roller core; 11. roller cavity; 2. rubber layer; 3. inner roller core; 4. groove; 41. edge. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction and be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0025] like Figure 1-3 As shown, the rubber roller of the present invention comprises a roller core and a rubber layer 2 laminated to the core surface. To reduce the weight of the rubber roller, the roller core adopts a hollow design. The roller core comprises an inner roller core 3 and an outer roller core 1. The rubber layer 2 is laminated to the surface of the outer roller core 1. The outer roller core 1 is a hollow cylindrical structure. There are two inner roller cores 3, each fixedly mounted at each end of the outer roller core 1. The outer roller core 1 is made of aluminum alloy, while the inner roller cores 3 are made of stainless steel. A roller cavity 11 is formed between the two inner roller cores 3. The use of a hollow aluminum alloy outer roller core 1 and stainless steel inner roller cores 3 at each end of the rubber roller effectively reduces the weight of the rubber roller and improves the durability of the rubber roller during use. The materials of the inner roller core 3 and outer roller core 1 described in the present invention are merely examples to illustrate that the inner roller core 3 has better wear resistance than the outer roller core 1, thus enhancing the durability of the rubber roller. The materials of the inner roller core 3 and outer roller core 1 can also be replaced with other durable materials.

[0026] The hardness of the rubber layer 2 is in the Shore hardness range of 50A. Of course, as long as it does not affect the performance, the hardness of the rubber layer 2 can be selected anywhere between 30A and 80A. The rubber layer 2 can be made of EPDM rubber, or alternatively, polyurethane rubber, nitrile rubber, or other rubbers. However, the thickness of the rubber layer 2 is not less than 2mm to facilitate the composite of the rubber layer 2 with the outer roller core 1 and to maintain the elasticity of the rubber layer 2 during use. The surface of the rubber layer 2 has a plurality of elongated grooves 4 with irregular edges 41. The grooves 4 tend to be arranged in the same direction on the surface of the rubber layer 2, and the long sides of the grooves 4 tend to be axially aligned with the rubber roller. To ensure sufficient ink loading, the grooves 4 of the present application have an average length of 10mm, an average width of 1.5mm, and an average depth of 0.3mm. The edges 41 of the grooves 4 have an average thickness of 0.1mm, and the edges 41 of the grooves 4 are irregular convex ridges. In addition, it should be noted that due to insufficient processing accuracy, the length dimension of the groove 4 generally varies within the range of 3mm-20mm, the width dimension of the groove 4 generally varies within the range of 1mm-2.5mm, the depth dimension of the groove 4 generally varies within the range of 0.05mm-0.5mm, and the thickness dimension of the edge 41 of the groove 4 generally varies within the range of 0.05mm-0.2mm. The average length, width, depth and thickness of the edge 41 will also change accordingly, but overall it will not affect the effect of this rubber roller when used for ink printing.

[0027] When the rubber roller is in use, due to the small width of the groove 4 and the thin thickness of the edge 41, the edge 41 of the groove 4 can puncture the bubbles in the ink tank during the ink loading process, effectively avoiding the problem of bubbles being transferred to the anilox roller and improving the printing effect.

[0028] In addition, if a finishing process is used, such as milling, laser processing, etc., as long as the processing accuracy can meet the size requirements of the groove 4 of the rubber roller, the groove 4 can also be a regular long strip structure. In this case, the edge 41 of the groove 4 is a regular convex ridge structure, such as Figure 4 As shown, the length, width and depth of the groove 4 can be the same or different; but the length size range of the groove 4 is 3mm-20mm, the width size range of the groove 4 is 1mm-2.5mm, the depth size range of the groove 4 is 0.05mm-0.5mm, and the thickness size range of the edge 41 of the groove 4 is 0.05mm-0.2mm.

[0029] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rubber roller comprising a roller core and a rubber layer composited on the surface of the roller core, characterized in that: The rubber layer has a plurality of long strip grooves on its surface, the grooves tend to be arranged in the same direction on the surface of the rubber layer, and the long side direction of the grooves tends to the axial direction of the rubber roller; The length of the groove is 3mm-20mm, the width of the groove is 1mm-2.5mm, the depth of the groove is 0.05mm-0.5mm, and the edge thickness of the groove is 0.05mm-0.2mm.

2. The rubber roller according to claim 1, characterized in that: The rubber layer is made of rubber material, and the thickness of the rubber layer is not less than 2 mm.

3. The rubber roller according to claim 1, characterized in that: The roller core includes an inner roller core and an outer roller core. The rubber layer is compounded on the surface of the outer roller core. The outer roller core is a hollow cylindrical structure. There are two inner roller cores, which are fixedly installed at both ends of the outer roller core.

4. The rubber roller according to claim 3, characterized in that: The outer roller core is made of aluminum alloy, and the inner roller core is made of stainless steel.

5. The rubber roller according to claim 1, characterized in that: The hardness of the rubber layer ranges from 30A to 80A on Shore A.

6. The rubber roller according to claim 1, characterized in that: The edge of the groove is an irregular convex ridge structure.

7. The rubber roller according to claim 1, characterized in that: The edge of the groove is a regular convex ridge structure.

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