Heating device of anilox roller

Abstract

The invention belongs to the field of thermal printers, and relates to an anilox roller heating device which comprises an anilox roller, the anilox roller comprises an outer pipe and an inner pipe sleeved with the outer pipe, a plurality of through holes are formed in the side face of the inner pipe, the outer pipe and the inner pipe are connected with a rotating joint, a liquid inlet is formed in the end, away from the anilox roller, of the rotating joint, and a liquid outlet is formed in the end, away from the anilox roller, of the rotating joint. A liquid outlet is formed in the side face of the rotary connector, and an oil heater is connected between the liquid inlet and the liquid outlet in a pipeline connection mode. The anilox roller is arranged to be the outer pipe and the inner pipe which are connected in a sleeved mode, high-temperature oil enters the gap between the inner pipe and the outer pipe through the through hole of the inner pipe, the gap between the inner pipe and the outer pipe is filled with the high-temperature oil, and therefore the outer pipe is evenly heated, and even heating of the anilox roller is completed.

Description

Technical Field

[0001] The invention belongs to the field of thermal printers and relates to a heating device for an anilox roller. Background Art

[0002] In the prior art, the heating device is a heating wire set in the feeding roller. However, in actual use, uneven heating is found. The reason is that the heating wire on the market is basically a U-shaped loop. In the feeding roller, the distance between each point on the inner wall of the feeding roller and the heating wire is different. This uneven heating leads to uneven coloring of the banner cloth, so it is urgent to improve it.

[0003] The above-mentioned prior art is the application document with application number CN201110143109.7 (a thermal printer), which discloses: it includes a printing rubber roller used in conjunction with a print head, a cooling device for controlling the printing rubber roller to maintain a set temperature, a feeding device and a first driving device that drives the printing rubber roller to rotate and is connected to the printing rubber roller; when working, the feeding device transports printing materials to the printing rubber roller, and the feeding device includes a feeding roller and a second driving device that drives the feeding roller to rotate; when working, the feeding roller transports printing materials to the printing rubber roller, and a heating device that can heat the feeding roller and keep it at a set temperature is connected to the feeding roller. Summary of the invention

[0004] In view of the above-mentioned situation that the heating of the anilox roller is uneven, the present invention provides a heating device for the anilox roller using a new heating method.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a heating device for an anilox roller, comprising an anilox roller, the anilox roller comprising an outer tube and an inner tube sleeved in the outer tube, a plurality of through holes are arranged on the side of the inner tube, the outer tube and the inner tube are connected by a rotary joint, a liquid inlet is arranged at one end of the rotary joint away from the anilox roller, and a liquid outlet is arranged on the side of the rotary joint, an oil heater is connected between the liquid inlet and the liquid outlet by means of a pipeline connection.

[0006] Preferably, the plurality of through holes are arranged in a straight line, and the spacing between adjacent through holes is the same.

[0007] Preferably, the oil heater heats the oil to a temperature of 120°C-140°C.

[0008] Preferably, an end of the outer tube close to the rotary joint is provided with an internal thread.

[0009] Preferably, the outer tube and the inner tube are both configured to be closed at one end and open at the other end.

[0010] Preferably, one end of the anilox roller close to the rotary joint is connected to a bearing seat, and one end of the anilox roller away from the rotary joint is connected to a driving motor.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] The present invention arranges the anilox roller as a sleeved outer tube and an inner tube, so that high-temperature oil enters the gap between the inner tube and the outer tube through the through hole of the inner tube, and the high-temperature oil fills the gap between the inner tube and the outer tube, thereby achieving uniform heating of the outer tube, that is, completing uniform heating of the anilox roller.

[0013] The oil used in the present invention enters and exits from the end of the anilox roller close to the rotary joint, so the end of the anilox roller away from the rotary joint can be connected to the drive motor through a coupling connection. The method of using a coupling to connect the drive motor and the anilox roller is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a structural schematic diagram of a heating device for an anilox roller;

[0016] Figure 2 Schematic diagram of the internal structure of the anilox roller;

[0017] Figure 3 It is a structural diagram of a rotary joint.

[0018] In the above figures, 1, anilox roller; 11, outer tube; 12, inner tube; 121, through hole; 2, rotary joint; 21, liquid inlet; 22, liquid outlet; 3, oil heater; 4, bearing seat; 5, drive motor. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, in order to uniformly heat the anilox roller 1, a heating device for the anilox roller comprises an anilox roller 1, the anilox roller 1 comprises an outer tube 11 and an inner tube 12 sleeved in the outer tube 11, a plurality of through holes 121 are arranged on the side of the inner tube 12, the outer tube 11 and the inner tube 12 are connected with a rotary joint 2, an end of the rotary joint 2 away from the anilox roller 1 is provided with a liquid inlet 21, and a liquid outlet 22 is arranged on the side of the rotary joint 2, the liquid inlet 21 is directly connected with the inner tube 12, the liquid outlet 22 is connected with the outer tube 11, and an oil heater 3 is connected between the liquid inlet 21 and the liquid outlet 22 by a pipeline connection. The rotary joint 2 and the oil heater 3 can be purchased from the market, and the present invention will not be described in detail here.

[0022] Specifically, the circulation flow path of the oil is: the oil heater 3 in the present invention heats the oil and pumps the oil into the liquid inlet 21, then enters the inner tube 12 through the liquid inlet 21, and then flows from the through hole 121 of the inner tube 12 to between the inner tube 12 and the outer tube 11. The high-temperature oil fills the space between the inner tube 12 and the outer tube 11, thereby uniformly heating the outer tube 11, and finally the oil flows back to the oil heater 3 from the liquid outlet 22.

[0023] Furthermore, the plurality of through holes 121 are arranged in a straight line, and the intervals between adjacent through holes 121 are the same.

[0024] Furthermore, the oil heater 3 heats the oil temperature to 120°C-140°C.

[0025] Furthermore, an end of the outer tube 11 close to the rotary joint 2 is provided with an internal thread to facilitate connection with the rotary joint 2 .

[0026] The oil in the present invention enters and exits at one end of the anilox roller 1 close to the rotary joint 2, which is different from the prior art in which the cooling water enters from one end of the rubber roller and is discharged from the other end of the rubber roller. Therefore, the present invention is further provided with:

[0027] The outer tube 11 and the inner tube 12 are both configured to be closed at one end and open at the other end. The end of the anilox roller 1 close to the rotary joint 2 is connected to a bearing seat 4, which is used to connect to the sheet metal of the printer. The bearing seat 4 supports the rotation of the anilox roller 1, and the end of the anilox roller 1 away from the rotary joint 2 is connected to a drive motor 5. The drive motor 5 can drive the anilox roller 1 to rotate by means of a coupling connection.

[0028] In addition, the present invention can be used not only for heating the anilox roller 1 but also for cooling the rubber roller, and it is only necessary to use a cooler to replace the oil heater 3 and to use water to replace the oil.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A heating device for anilox roller, characterized in that: The invention comprises an anilox roller, wherein the anilox roller comprises an outer tube and an inner tube sleeved in the outer tube, a side surface of the inner tube is provided with a plurality of through holes, the outer tube and the inner tube are connected with a rotary joint, an end of the rotary joint away from the anilox roller is provided with a liquid inlet, and a side surface of the rotary joint is provided with a liquid outlet, and an oil heater is connected between the liquid inlet and the liquid outlet by means of a pipeline connection.

2. The heating device for anilox roller according to claim 1, characterized in that: The plurality of through holes are arranged in a straight line, and the spacing between adjacent through holes is the same.

3. The heating device for anilox roller according to claim 2, characterized in that: The oil heater heats the oil to a temperature of 120°C-140°C.

4. The heating device for anilox roller according to claim 3, characterized in that: An end of the outer tube close to the rotary joint is provided with an internal thread.

5. The heating device for anilox roller according to claim 4, characterized in that: The outer tube and the inner tube are both configured to be closed at one end and open at the other end.

6. The heating device for anilox roller according to claim 5, characterized in that: One end of the anilox roller close to the rotary joint is connected to a bearing seat, and one end of the anilox roller away from the rotary joint is connected to a driving motor.

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