An anilox structure having a replaceable anilox sleeve

Abstract

The utility model belongs to printing equipment technical field especially relates to a networked roll structure with replaceable networked sleeve, including networked roll body, a plurality of inner sleeve and an outer sleeve, inner sleeve and outer sleeve all are with networked roll body swing joint, networked roll body is provided with the embedded groove of annular arrangement, embedded groove is " T " shape, inner sleeve and outer sleeve inner wall all are equipped with the embedded block corresponding embedded groove, embedded block is connected with embedded groove, outer sleeve end face is provided with arc groove no.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and more specifically, it relates to an anilox roller structure with a replaceable anilox sleeve. Background Technology

[0002] The anilox roller is a core component of flexographic printing presses, responsible for uniformly transferring a specific amount of ink onto the printing plate. Flexographic printing presses employ a short ink path ink supply system, primarily composed of four parts: the ink trough, the rubber roller, the doctor blade, and the anilox roller. Numerous uniformly shaped micro-holes, commonly referred to as "inking holes," are evenly distributed on the surface of the anilox roller. These holes play a crucial role in ink storage, even distribution, and quantitative ink transfer during printing. The inking holes are typically engraved at a 45° angle to the axis, and the partitions between them are called "ink walls," the area of ​​which depends on the shape of the ink holes. Traditional anilox rollers are integral metal rollers with an engraved cell structure, presenting two major technical drawbacks:

[0003] 1. Localized damage to the weave pattern requires the entire roller to be replaced, resulting in high maintenance costs (the cost of a single roller can reach tens of thousands of yuan).

[0004] 2. Different printing tasks require multiple anilox rollers, making warehouse management complex.

[0005] For example, the anilox roller disclosed in authorization announcement number CN 220995870 U consists of multiple anilox sleeves fitted on the outer end of the roller body to form the main body of the anilox roller. Since the multiple anilox sleeves and the roller body are all detachable connection structures, when the anilox is damaged, only the damaged anilox sleeve needs to be replaced, which can effectively save production costs. At the same time, it is also convenient to disassemble and clean the anilox sleeves, improving the ease of use.

[0006] Although the above method achieves partial replacement of the anilox roller, problems such as low sleeve positioning accuracy and ink leakage at the joints still exist during use. Utility Model Content

[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a type of anilox roller structure with a replaceable anilox sleeve that has higher positioning accuracy.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An anilox roller structure with replaceable anilox sleeves includes an anilox roller body, several inner sleeves, and an outer sleeve. Both the inner and outer sleeves are movably connected to the anilox roller body. The inner walls of the inner and outer sleeves are coated with a material having a thermal expansion coefficient of 12 × 10⁻⁶. -6 Aluminum alloy transition layer at / ℃, base shaft material with thermal expansion coefficient of 9×10 -642CrMO alloy steel at / ℃,

[0010] The anilox roller body has annularly arranged embedding grooves, which are T-shaped. The inner sleeve and outer sleeve have embedding blocks on their inner walls corresponding to the embedding grooves. The embedding blocks engage with the embedding grooves.

[0011] The outer sleeve end face is provided with an arc-shaped groove one, and the end face of the anilox roller body is provided with an arc-shaped groove two corresponding to the arc-shaped groove one. The inner walls of both the arc-shaped groove one and the arc-shaped groove two are provided with matching threads.

[0012] The first and second arc-shaped grooves are equipped with fastening screws to secure the outer sleeve to the anilox roller body.

[0013] One end face of the inner sleeve is provided with an annular protrusion, and the adjacent end of the inner sleeve is provided with a V-shaped groove. The annular protrusion and the V-shaped groove are interference fit.

[0014] The present invention is further configured such that: a plurality of annularly arranged constant temperature tanks are provided in the body of the anilox roller, heating tubes are provided in the constant temperature tanks, water is injected into the constant temperature tanks, and temperature sensors that are communicatively connected to the heating tubes are provided on the inner wall of the constant temperature tanks.

[0015] The present invention is further configured such that: the anilox roller body is provided with a sealing plug for sealing the constant temperature tank.

[0016] The present invention is further configured such that: the inner wall of the embedding groove is provided with an elastic strip, the side wall of the elastic strip abuts against the outer wall of the embedding block, and the cross-section of the elastic strip is triangular.

[0017] The present invention is further configured such that the embedded block is made of an elastic material.

[0018] Compared with the shortcomings of the existing technology, the beneficial effects of this utility model are as follows:

[0019] By setting up replaceable outer and inner sleeves, the operating cost of the anilox roller is reduced. Replacing a single sleeve can save 8% of the replacement cost, and disassembly and assembly are more convenient. At the same time, the segmented anilox roller is easier to transport. Furthermore, by setting up a constant temperature bath, when a specific inner sleeve needs to be replaced, the circulating water supply to the target area is turned off, and the anilox roller body is locally heated to 50-60℃ (assisted by the built-in heating pipe). The aluminum alloy transition layer on the inner wall of the sleeve section and the anilox roller body produce a diameter difference of 0.3-0.5%, which increases the fitting gap between the embedding groove and the embedding block from 0.01mm to 0.08mm, achieving non-destructive disassembly. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0021] Figure 2This is a cross-sectional view of an embodiment of the present utility model;

[0022] Figure 3 This is a side view of an embodiment of the present utility model.

[0023] 1. Anilox roller body; 2. Inner sleeve; 3. Outer sleeve; 4. Embedded groove; 5. Embedded block; 6. Arc groove one; 7. Arc groove two; 8. Fastening screw; 9. Annular protrusion; 10. Constant temperature tank; 11. Heating tube; 12. Temperature sensor; 13. Elastic strip. Detailed Implementation

[0024] 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.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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.

[0026] Working principle: When in use, first engage the insert block 5 on the inner sleeve 2 with the insert groove 4 on the anilox roller body 1, then install the inner sleeve 2 in sequence, and make the annular protrusion 9 and the V-shaped groove interference fit. Then install the outer sleeve 3 according to the above steps, and make the arc groove 1 6 fit with the arc groove 2 7. Then place the fastening screw 8 between the arc groove 1 6 and the arc groove 2 7 to fix the outer sleeve 3 and the anilox roller body 1.

[0027] During disassembly, first adjust the temperature of the water in the constant temperature bath 10 and shut off the circulating water supply to the target area. Then, the anilox roller body 1 is locally heated to 50-60℃ with the assistance of the built-in heating tube 11. The aluminum alloy transition layer on the inner wall of the sleeve section and the anilox roller body 1 have a diameter difference of 0.3-0.5%, which increases the fit gap between the embedded groove 4 and the embedded block 5 from 0.01mm to 0.08mm, thus achieving non-destructive disassembly.

[0028] like Figures 1 to 3 As shown,

[0029] The device includes an anilox roller body 1, several inner sleeves 2 and an outer sleeve 3. Both the inner sleeves 2 and the outer sleeve 3 are movably connected to the anilox roller body 1. Several annularly arranged constant temperature tanks 10 are provided inside the anilox roller body 1. Heating tubes 11 are provided inside the constant temperature tanks 10. Water is injected into the constant temperature tanks 10. Temperature sensors 12 that are communicatively connected to the heating tubes 11 are provided on the inner wall of the constant temperature tanks 10 to facilitate the adjustment of the temperature of the anilox roller body 1.

[0030] The anilox roller body 1 is provided with a sealing plug for sealing the constant temperature bath 10, which can prevent water leakage from the constant temperature bath 10 from affecting the printing work.

[0031] The inner walls of the inner sleeve 2 and the outer sleeve 3 are coated with a material with a thermal expansion coefficient of 12×10⁻⁶. -6 Aluminum alloy transition layer at / ℃, base shaft material with thermal expansion coefficient of 9×10 -6 The 42CrMO alloy steel at / ℃, the constant temperature bath 10 controls the surface temperature of the inner sleeve 2 and the outer sleeve 3 to 28-32℃, and the temperature difference with the anilox roller body 1 is <3℃, so that the ink transfer deviation is reduced from ±5% in the traditional structure to ±1.2%.

[0032] The anilox roller body 1 has a ring of embedded grooves 4 arranged in a "T" shape, which makes the connection more stable.

[0033] The inner sleeve 2 and the outer sleeve 3 are each provided with an embedded block 5 corresponding to the embedded groove 4. The embedded block 5 is made of elastic material and is snapped into the embedded groove 4. The inner wall of the embedded groove 4 is provided with an elastic strip 13. The side wall of the elastic strip 13 abuts against the outer wall of the embedded block 5. The cross-section of the elastic strip 13 is triangular. Under the elastic action of the elastic strip 13, the embedded block 5 and the embedded groove 4 are interference fit, thereby increasing the friction between the embedded block 5 and the embedded groove 4 and making the connection more stable.

[0034] The outer sleeve 3 has an arc-shaped groove 6 on its end face, and the anilox roller body 1 has an arc-shaped groove 7 on its end face corresponding to the arc-shaped groove 6. The inner walls of the arc-shaped groove 6 and the arc-shaped groove 7 are both provided with matching threads. The arc-shaped groove 6 and the arc-shaped groove 7 are provided with fastening screws 8 to fix the outer sleeve 3 and the anilox roller body 1. The outer sleeve 3 is fixed by the threaded connection, which makes the assembly and disassembly more convenient.

[0035] The inner sleeve 2 has an annular protrusion 9 on one end face and a V-shaped groove on one end of the adjacent inner sleeve 2. The annular protrusion 9 and the V-shaped groove are interference-fitted to seal the two adjacent sleeves and prevent ink from seeping in.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A structure for an anilox roller with a replaceable anilox sleeve, characterized in that: It includes an anilox roller body (1), several inner sleeves (2) and an outer sleeve (3). The inner sleeves (2) and the outer sleeve (3) are movably connected to the anilox roller body (1). The inner walls of the inner sleeves (2) and the outer sleeve (3) are coated with a material with a thermal expansion coefficient of 12×10. -6 Aluminum alloy transition layer at / ℃, base shaft material with thermal expansion coefficient of 9×10 -6 42CrMO alloy steel at / ℃, The anilox roller body (1) has annularly arranged embedding grooves (4) in the shape of a "T". The inner sleeve (2) and the outer sleeve (3) are provided with embedding blocks (5) corresponding to the embedding grooves (4). The embedding blocks (5) are engaged with the embedding grooves (4). The outer sleeve (3) has an arc-shaped groove 1 (6) on its end face, and the anilox roller body (1) has an arc-shaped groove 2 (7) on its end face corresponding to the arc-shaped groove 1 (6). The inner walls of the arc-shaped groove 1 (6) and the arc-shaped groove 2 (7) are both provided with matching threads. The first arc groove (6) and the second arc groove (7) are provided with fastening screws (8) to fix the outer sleeve (3) to the anilox roller body (1). The inner sleeve (2) has an annular protrusion (9) on one end face, and a V-shaped groove is opened on the other end of the inner sleeve (2) adjacent to it. The annular protrusion (9) and the V-shaped groove are interference fit.

2. The anilox roller structure with a replaceable anilox sleeve according to claim 1, characterized in that: The anilox roller body (1) has several annularly arranged constant temperature tanks (10) inside. The constant temperature tanks (10) are equipped with heating tubes (11) and water is injected into them. The inner wall of the constant temperature tanks (10) is equipped with a temperature sensor (12) that is communicatively connected to the heating tubes (11).

3. The anilox roller structure with a replaceable anilox sleeve according to claim 1, characterized in that: The anilox roller body (1) is provided with a sealing plug for sealing the constant temperature tank (10).

4. The anilox roller structure with a replaceable anilox sleeve according to claim 1, characterized in that: The inner wall of the embedding groove (4) is provided with an elastic strip (13), the side wall of the elastic strip (13) abuts against the outer wall of the embedding block (5), and the cross-section of the elastic strip (13) is triangular.

5. The anilox roller structure with a replaceable anilox sleeve according to claim 1, characterized in that: The embedded block (5) is made of an elastic material.

Images