An embossing rubber roller for a gravure printing machine

Abstract

The utility model discloses an embossing rubber roller for a gravure printing machine, comprising a core shaft and a rubber roller, wherein the rubber roller is fixedly arranged on the circumferential outer wall of the core shaft, the circumferential inner wall of the rubber roller is adapted to the circumferential outer wall structure of the core shaft and closely fits each other; the rubber roller is a tapered sleeve structure with a high middle and low ends; both ends of the core shaft are provided with a transmission cam; the embossing rubber roller is a tapered column structure with a high middle and low ends through the rubber roller, so that the rubber roller on the embossing rubber roller and the gravure are more closely and evenly fitted. The utility model has the advantages of even ink transfer, good embossing effect, avoiding the situation that the embossing rubber roller transfers ink unevenly and easily misses printing, long service life, convenient disassembly and assembly, and convenient maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to an embossing rubber roller for a gravure printing machine. Background Art

[0002] The embossing rubber roller of a gravure printing machine is a special printing roller on a gravure printing machine, which is made of a metal core shaft and rubber. The embossing rubber roller of a gravure printing machine and the gravure plate are two key components in a gravure printing machine. They each play an important role and work closely together to complete the printing process. The surface of the embossing rubber roller is usually made of a special rubber material, which has good elasticity and wear resistance. The embossing rubber roller plays a flat pressing role during the embossing process and has a certain contact with the gravure plate to ensure the flatness and smoothness of the surface of the printed product. There is a concave graphic part on the gravure plate for storing and transferring ink. During the printing process, the ink on the gravure plate is evenly transferred to the printing material under the action of the embossing rubber roller, thereby forming the required pattern and text; most of the existing embossing rubber rollers are flat roller structures, but when the embossing rubber roller contacts the gravure plate for embossing, pressure is applied to the two ends of the embossing rubber roller core shaft through the outside, and long-term use will cause the middle part of the embossing rubber roller to be slightly warped and deformed, and there are problems such as uneven ink transfer by the embossing rubber roller, easy to miss printing, and short service time. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an embossing rubber roller for a gravure printing machine, which has uniform ink transfer and good embossing effect, avoids the situation that the embossing rubber roller transfers ink unevenly and easily misses printing, has a long service life, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an embossing rubber roller for a gravure printing machine, comprising a core shaft and a rubber roller, wherein the rubber roller is fixedly arranged on the circumferential outer wall of the core shaft, the circumferential inner wall of the rubber roller is adapted to the circumferential outer wall structure of the core shaft and fits tightly to each other; the rubber roller is a tapered sleeve structure with a high middle and low ends; and transmission cams are provided at both ends of the core shaft.

[0005] Furthermore, the core shaft is a conical column structure that is high in the middle and low at both ends.

[0006] Furthermore, the core shaft is a cylindrical structure.

[0007] Furthermore, when the width of the rubber roller is ≥1200 mm, the center position of the rubber roller is 12-15 μm higher than both ends thereof.

[0008] Furthermore, when the width of the rubber roller is between 901 and 1199 mm, the center position of the rubber roller is 10 to 13 μm higher than both ends thereof.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the embossing rubber roller used in the gravure printing machine has uniform ink transfer and good embossing effect, avoids the situation that the embossing rubber roller transfers ink unevenly and easily misses printing, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of the embossing rubber roller of the first embodiment of the utility model;

[0011] Figure 2 This is a schematic diagram of the structure of the embossing rubber roller according to the second embodiment of the utility model.

[0012] In the figure: 1, core shaft; 11, transmission cam shaft; 2, rubber roller. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0014] See also Figure 1 The utility model provides a technical solution: an embossing rubber roller for a gravure printing machine, comprising a core shaft 1 and a rubber roller 2, wherein the rubber roller 2 is fixedly arranged on the circumferential outer wall of the core shaft 1, and the circumferential inner wall of the rubber roller 2 is adapted to the circumferential outer wall structure of the core shaft 1 and fits tightly with each other; the core shaft 1 is a conical column structure with a high middle and low two ends, and the rubber roller 2 is a conical sleeve structure with a high middle and low two ends; both ends of the core shaft 1 are provided with a transmission cam 11.

[0015] Furthermore, when the width of the rubber roller 2 is ≥1200 mm, the center position of the rubber roller 2 is 12-15 μm higher than the two ends thereof.

[0016] Furthermore, when the width of the rubber roller 2 is between 901 and 1199 mm, the center position of the rubber roller 2 is 10 to 13 μm higher than the two ends thereof.

[0017] Working principle:

[0018] The external pressure mechanism applies pressure to the two ends of the embossing rubber roller core shaft 1 to make it contact with the gravure plate. The middle part of the rubber roller 2 of the embossing rubber roller will be slightly warped upward and deformed. However, since the rubber roller 2 is a conical column structure with a high middle and low ends, the rubber roller 2 on the embossing rubber roller fits the gravure plate more closely and evenly, the ink is transferred evenly, the embossing effect is good, and the uneven ink transfer and easy missing of the embossing rubber roller are avoided, and the service life is long. Embodiment 2

[0019] See also Figure 2 The utility model provides a technical solution: an embossing rubber roller for a gravure printing machine, comprising a core shaft 1 and a rubber roller 2, wherein the rubber roller 2 is fixedly arranged on the circumferential outer wall of the core shaft 1, and the circumferential inner wall of the rubber roller 2 is adapted to the circumferential outer wall structure of the core shaft 1 and fits tightly to each other; the core shaft 1 is a cylindrical structure, and the rubber roller 2 is a tapered sleeve structure with a high middle and low two ends; both ends of the core shaft 1 are provided with a transmission cam 11.

[0020] Furthermore, when the width of the rubber roller 2 is ≥1200 mm, the center position of the rubber roller 2 is 12-15 μm higher than the two ends thereof.

[0021] Furthermore, when the width of the rubber roller 2 is between 901 and 1199 mm, the center position of the rubber roller 2 is 10 to 13 μm higher than the two ends thereof.

[0022] Compared with the first embodiment, the core shaft 1 of this embodiment is a cylindrical structure, and the core shaft 1 and the rubber roller 2 are easy to disassemble and assemble, and are convenient for maintenance.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An embossing rubber roller for a gravure printing machine, comprising a core shaft (1) and a rubber roller (2), characterized in that: The rubber roller (2) is fixedly arranged on the circumferential outer wall of the core shaft (1); the circumferential inner wall of the rubber roller (2) is structurally matched with the circumferential outer wall of the core shaft (1) and fits tightly to each other; the rubber roller (2) is a tapered sleeve structure with a high middle and low ends; and transmission cams (11) are provided at both ends of the core shaft (1).

2. The embossing rubber roller for a gravure printing machine according to claim 1, characterized in that: The core shaft (1) is a conical column structure that is high in the middle and low at both ends.

3. The embossing rubber roller for a gravure printing machine according to claim 1, characterized in that: The core shaft (1) is a cylindrical structure.

4. An embossing rubber roller for a gravure printing machine according to any one of claims 1 to 3, characterized in that: When the width of the rubber roller (2) is ≥1200 mm, the center position of the rubber roller (2) is 12 to 15 μm higher than the two ends thereof.

5. The embossing rubber roller for a gravure printing machine according to any one of claims 1 to 3, characterized in that: When the width of the rubber roller (2) is between 901 and 1199 mm, the center position of the rubber roller (2) is 10 to 13 μm higher than the two ends thereof.

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