Special water-cooling heat dissipation printing roller for printing machine

Abstract

The utility model relates to the technical field of printing machines, and discloses a special water-cooling heat dissipation printing roller for a printing machine, which comprises a printing roller body, a support base, a liquid outlet pipe and a return pipe, a main pipe is arranged on one side of the printing roller body, and one end of the main pipe extends into the printing roller body; the printing roller body, the supporting base, the liquid outlet pipe, the backflow pipe, the main pipe, the auxiliary pipe, the stirring device and the like are arranged and used in cooperation, when the printing roller body is cooled, cooling liquid flowing out of the liquid outlet pipe enters the printing roller body after passing through the main pipe, an inner cavity of the printing roller body can be filled with the cooling liquid, missing areas are avoided, and the cooling efficiency is improved; and meanwhile, the stirring device arranged between the main pipe and the auxiliary pipe can stir the cooling liquid in the printing roller body, so that the cooling liquid rotationally flows through the printing roller body, the inner wall of the printing roller body is covered with the cooling liquid more uniformly, and the printing effect is improved. Therefore, more uniform heat transfer and a better cooling effect are provided.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, in particular to a water-cooled heat-dissipating printing roller dedicated to printing machines. Background Art

[0002] The chill roller is a large metal roller with a hollow interior. During the printing process, ink is applied to the plate and transferred to the chill roller as the press rotates. The chill roller removes heat through an internal conveying system, thereby lowering the temperature of the ink and solidifying it on the plate.

[0003] At present, the patent with announcement number CN212920768U discloses a water-cooled heat dissipation printing roller for printing machines, including a support base and a printing roller body arranged above the support base, the support base is a hollow rectangular parallelepiped structure, a group of vertically arranged support rods are welded at the middle of both sides of the top surface of the support base, the support rods are T-shaped rods, and the T-shaped tops of the support rods are provided with arc-shaped bottom grooves, the roller shafts connected at both ends of the printing roller body are stuck in the bottom grooves, the two groups of roller shafts are fixed at the middle of both sides of the printing roller body, and the inner cavity of the roller shaft is connected to the inner cavity of the printing roller body, the inside of the roller shaft is plugged with a rotatable support outer tube, and the inside of the printing roller body is provided with a support inner tube fixedly connected to the two groups of support outer tubes. The water-cooled heat dissipation printing roller for printing machines can blow the cooling liquid into the liquid inlet pipe and spray it onto the inner surface of the printing roller body, so that the cooling liquid is fully in contact with the printing roller body, and the cooling effect on the surface of the printing roller body is better and more uniform.

[0004] But the following problems still exist:

[0005] The above-mentioned device cools down the inner wall of the printing roller by spraying the coolant through the atomizing nozzle on the liquid inlet pipe. The water mist sprayed by the atomizing nozzle has a limited coverage range and may not be able to completely cover the entire inner wall of the printing roller, resulting in inconsistent cooling effect on the inner wall of the printing roller. Some areas may be overheated or overcooled, and uncovered areas may not be effectively cooled, thereby affecting the heat dissipation effect of the entire printing roller. Utility Model Content

[0006] The utility model aims to provide a special water-cooled heat dissipation printing roller for a printing machine, so as to improve the cooling effect of the cooling liquid on the printing roller.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A water-cooled heat dissipation printing roller specially used for a printing machine comprises a printing roller body, a supporting base, a liquid outlet pipe and a reflux pipe. A main pipe is arranged on one side of the printing roller body, and one end of the main pipe extends to the interior of the printing roller body, and the main pipe is connected to the liquid outlet pipe. A secondary pipe is arranged on the other side of the printing roller body, and one end of the secondary pipe extends to the interior of the printing roller body, and the secondary pipe is connected to the reflux pipe. A stirring device is arranged between the main pipe and the secondary pipe.

[0009] Preferably, the stirring device includes a support rod fixedly connected to the inner wall of the main pipe, and the other end of the support rod is fixedly connected to the inner wall of the auxiliary pipe. The side wall of the support rod located inside the printing roller body is provided with a rotating sleeve, and the side wall of the rotating sleeve is fixedly connected to multiple groups of spiral blades.

[0010] Preferably, the side wall of the spiral blade is provided with a plurality of strip grooves.

[0011] Preferably, both ends of the rotating sleeve are fixedly connected to limit rings, and a ring groove is provided on the side wall of the support rod below the limit ring, and the side wall of the limit ring is slidably connected to the inner wall of the ring groove.

[0012] Preferably, an inner wall of the support rod is provided with a penetrating air cavity, and an exhaust fan is provided on one side of the main pipe, and an air outlet of the exhaust fan is connected to the air cavity.

[0013] Preferably, the air inlet of the exhaust fan is provided with a filter.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides a printing roller body, a supporting base, a liquid outlet pipe, a reflux pipe, a main pipe, a sub-pipe and a stirring device for coordinated use. When the printing roller body is cooled, the cooling liquid flowing out of the liquid outlet pipe enters the interior of the printing roller body after passing through the main pipe, and fills the inner cavity of the printing roller body, avoiding missed areas and improving the cooling efficiency. After that, the cooling liquid flows through the sub-pipe and the reflux pipe connected to the sub-pipe, which is convenient for recycling. At the same time, the stirring device arranged between the main pipe and the sub-pipe stirs the cooling liquid inside the printing roller body, so that the cooling liquid rotates and flows through the printing roller body, more evenly covering the inner wall of the printing roller body, thereby providing more even heat transfer and better cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a water-cooled heat dissipation printing roller specially used for a printing machine proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the front cross-sectional structure of a water-cooled heat dissipation printing roller specially used for a printing machine proposed by the utility model;

[0018] Figure 3 for Figure 2The enlarged structural diagram at A in the middle;

[0019] Figure 4 The utility model is a schematic diagram of the disassembled structure of a water-cooled heat dissipation printing roller specially used for a printing machine.

[0020] In the figure: 1. printing roller body; 2. supporting base; 3. liquid outlet pipe; 4. reflux pipe; 5. main pipe; 6. auxiliary pipe; 7. support rod; 8. rotating sleeve; 9. spiral blade; 10. air chamber; 11. exhaust fan; 12. filter screen; 13. strip groove; 14. ring groove; 15. limit ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-4 A water-cooled heat dissipation printing roller specially used for a printing machine comprises a printing roller body 1, a supporting base 2, a liquid outlet pipe 3 and a reflux pipe 4. A main pipe 5 is provided on one side of the printing roller body 1, and one end of the main pipe 5 extends to the interior of the printing roller body 1, the main pipe 5 is connected with the liquid outlet pipe 3, and a sub-pipe 6 is provided on the other side of the printing roller body 1, one end of the sub-pipe 6 extends to the interior of the printing roller body 1, and the sub-pipe 6 is connected with the reflux pipe 4, and a stirring device is provided between the main pipe 5 and the sub-pipe 6.

[0023] It can be seen from the above structure that; by setting the printing roller body 1, the supporting base 2, the liquid outlet pipe 3, the reflux pipe 4, the main pipe 5, the auxiliary pipe 6 and the stirring device for use in combination, when the printing roller body 1 is cooled, the cooling liquid flowing out of the liquid outlet pipe 3 enters the interior of the printing roller body 1 after passing through the main pipe 5, and will fill the inner cavity of the printing roller body 1 to avoid missing areas and improve the cooling efficiency. After that, the cooling liquid flows through the auxiliary pipe 6 and the reflux pipe 4 connected to the auxiliary pipe 6, which is convenient for recycling. At the same time, the stirring device arranged between the main pipe 5 and the auxiliary pipe 6 will stir the cooling liquid inside the printing roller body 1, so that the cooling liquid rotates and flows through the printing roller body 1, covering the inner wall of the printing roller body 1 more evenly, thereby providing more uniform heat transfer and better cooling effect.

[0024] Furthermore, the stirring device includes a support rod 7 fixedly connected to the inner wall of the main pipe 5, and the other end of the support rod 7 is fixedly connected to the inner wall of the auxiliary pipe 6. The side wall of the support rod 7 located inside the printing roller body 1 is rotatably sleeved with a rotating sleeve 8, and the side wall of the rotating sleeve 8 is fixedly connected with multiple groups of spiral blades 9; by arranging the support rod 7, the rotating sleeve 8 and the spiral blades 9 for use together, when the coolant enters the inside of the printing roller body 1 through the main pipe 5, the flowing coolant will slide along the inclined side wall of the spiral blade 9, and then push the spiral blade 9 to drive the rotating sleeve 8 to rotate around the outer wall of the support rod 7, and the rotating rotating sleeve 8 and the spiral blade 9 will stir the coolant inside the printing roller body 1, so that the coolant rotates and flows through the inside of the printing roller body 1, and can more evenly cover the inner wall of the printing roller body 1, thereby providing more uniform heat transfer and better cooling effect, and the rotating flow can produce a stronger convection effect, which is conducive to the transfer and dissipation of heat.

[0025] Furthermore, a plurality of strip grooves 13 are provided on the side wall of the spiral blade 9; by providing the strip grooves 13, the contact area between the spiral blade 9 and the coolant can be increased, thereby enhancing the interaction between the coolant and the spiral blade 9, and then guiding the coolant to form a specific flow pattern on the surface of the spiral blade 9, which helps to promote the rotation of the coolant.

[0026] Furthermore, both ends of the rotating sleeve 8 are fixedly connected to the limiting rings 15, and the side wall of the support rod 7 located below the limiting ring 15 is provided with an annular groove 14, and the side wall of the limiting ring 15 is slidably connected to the inner wall of the annular groove 14; by providing the limiting ring 15, when the rotating sleeve 8 rotates, the limiting rings 15 fixedly connected at both ends of the rotating sleeve 8 will slide along the inner wall of the annular groove 14, and the annular groove 14 can provide a limiting effect for the rotating sleeve 8, thereby preventing the rotating sleeve 8 from contacting the inner wall of the printing roller body 1, thereby affecting the rotation of the rotating sleeve 8.

[0027] Furthermore, an air cavity 10 is provided through the inner wall of the support rod 7, and an exhaust fan 11 is provided on one side of the main pipe 5, and an air outlet of the exhaust fan 11 is connected to the air cavity 10; by arranging the exhaust fan 11 and the air cavity 10 for use together, when the printing roller body 1 is cooled, the exhaust fan 11 is used to extract the outside air, and then the air extracted by the exhaust fan 11 will pass through the air cavity 10, and the air passing through the air cavity 10, when passing through one side of the printing roller body 1, will carry the heat dissipated by the coolant inside the printing roller body 1, providing a certain cooling effect for the coolant, and facilitating the cooling of the coolant for recycling.

[0028] Furthermore, a filter screen 12 is provided at the air inlet of the exhaust fan 11 ; by providing the filter screen 12 , impurities in the air extracted by the exhaust fan 11 are filtered, so that clean air passes through the air cavity 10 .

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A water-cooled heat dissipation printing roller for a printing machine, comprising a printing roller body (1), a support base (2), a liquid outlet pipe (3) and a return pipe (4), characterized in that: A main pipe (5) is provided on one side of the printing roller body (1), and one end of the main pipe (5) extends into the interior of the printing roller body (1), the main pipe (5) is connected to the liquid outlet pipe (3), and a secondary pipe (6) is provided on the other side of the printing roller body (1), one end of the secondary pipe (6) extends into the interior of the printing roller body (1), and the secondary pipe (6) is connected to the return pipe (4), and a stirring device is provided between the main pipe (5) and the secondary pipe (6).

2. A water-cooled heat dissipation printing roller for a printing press according to claim 1, characterized in that: The stirring device comprises a support rod (7) fixedly connected to the inner wall of the main pipe (5), and the other end of the support rod (7) is fixedly connected to the inner wall of the auxiliary pipe (6); a rotating sleeve (8) is rotatably provided on the side wall of the support rod (7) located inside the printing roller body (1), and a plurality of groups of spiral blades (9) are fixedly connected to the side wall of the rotating sleeve (8).

3. A water-cooled heat dissipation printing roller for a printing machine according to claim 2, characterized in that: The side wall of the spiral blade (9) is provided with a plurality of groups of strip-shaped grooves (13).

4. The water-cooled heat dissipation printing roller for a printing machine according to claim 2, characterized in that: The two ends of the rotating sleeve (8) are fixedly connected to the limiting rings (15), and a ring groove (14) is formed on the side wall of the support rod (7) below the limiting ring (15), and the side wall of the limiting ring (15) is slidably connected to the inner wall of the ring groove (14).

5. A water-cooled heat dissipation printing roller for a printing press according to claim 2 or 4, characterized in that: The inner wall of the support rod (7) is provided with a penetrating air cavity (10), and an exhaust fan (11) is provided on one side of the main pipe (5), and an air outlet of the exhaust fan (11) is connected to the air cavity (10).

6. A water-cooled heat dissipation printing roller for a printing machine according to claim 5, characterized in that: The air inlet of the exhaust fan (11) is provided with a filter (12).

Images