Printing roller cooling device for printing equipment
Technical Field
The invention relates to the technical field of printing equipment, in particular to a roller cooling device for printing equipment.
Background
Printing is a technique of transferring ink to the surface of a material such as paper, fabric, plastic, or leather by performing processes such as plate making, inking, and pressing on an original such as characters, pictures, photographs, or forgery prevention, and thereby mass-transferring the content of the original. Printing is the process of transferring the approved printing plate to the printing stock by printing machine and special ink. Machines for printing text and images. Modern printing presses typically consist of mechanisms for plating, inking, stamping, feeding (including folding), etc. The working principle is as follows: the characters and images to be printed are made into printing plate, then it is mounted on the printing machine, then the ink is coated on the position of the characters and images on the printing plate by manual or printing machine, then it is directly or indirectly transferred on the paper or other printing material (such as textile, metal plate, plastics, leather, wood plate, glass and ceramic) so as to reproduce the same printed matter as the printing plate. The invention and the development of the printing machine play an important role in the propagation of human civilization and culture.
The surface area of a printing rubber roller of the printing roller glazing is lost, meanwhile, the hardness of the rubber roller is increased, the elasticity of the rubber roller is reduced, although the phenomenon is inevitable, the temperature of the printing roller of the printing equipment is easy to rise during printing and needs to be cooled, at present, a cooling fan is mostly adopted for cooling the printing roller, and the cooling efficiency of only adopting the cooling fan is lower.
Disclosure of Invention
The present invention is directed to a device for cooling a roller for a printing apparatus to solve the problems of the related art.
In order to achieve the purpose, the invention provides the following technical scheme: a printing roller cooling device for printing equipment comprises a printing frame, a printing roller body and a cooling structure, wherein the printing roller body is arranged on the printing frame through a connecting column and comprises a roller wall and a roller cavity; the roller wall is provided with a roller surface layer, a first heat conduction layer and a second heat conduction layer, the first heat conduction layer is arranged on the inner side of the roller surface layer, and the second heat conduction layer is arranged on the inner side of the first heat conduction layer; the cooling structure comprises a cooling fan, a refrigerating fin group, a heat conducting block and a cooling strut, the cooling strut is arranged in the roller cavity and provided with the refrigerating fin group, and the refrigerating fin group comprises a plurality of connected refrigerating fins I; the heat-conducting blocks are arranged on two outer sides of the printing roller body and connected with the heat-radiating support columns, the connecting columns are provided with heat-radiating fans, and the heat-radiating fans rotate when the connecting columns rotate and cool the heat-conducting blocks through forced convection caused by the rotation of the heat-radiating fans.
Preferably, the end face, close to the printing roller body, of the printing rack is provided with a cold air box, a cooling fan and a second refrigerating sheet are arranged in the cold air box, and the output end of the cooling fan is opposite to the second refrigerating sheet.
Preferably, the first refrigerating sheet is arranged on the heat dissipation support, the hot end of the first refrigerating sheet is attached to the heat dissipation support, and the cold end of the first refrigerating sheet is attached to the second heat conduction layer.
Preferably, the first heat conduction layer and the second heat conduction layer are respectively a heat conduction silicone layer and a heat conduction sheet layer.
Preferably, the input end of the refrigerating sheet set is connected with a lead, and the lead penetrates through the end part on one side of the printing roller body and the connecting column and is connected with a first conductive connecting piece.
Preferably, the inner side of the printing frame, which is connected with the connecting column, is provided with a second conductive connecting piece, the second conductive connecting piece and the second conductive connecting piece are consistent in structure and are circular, and the second conductive connecting piece and the first conductive connecting piece comprise a positive conductive ring, a negative conductive ring and an insulating layer.
Preferably, the insulating layer is arranged between the positive conductive ring and the negative conductive ring, and the positive conductive ring and the negative conductive ring on the first conductive connecting piece correspond to and are in close contact with the positive conductive ring and the negative conductive ring on the second conductive connecting piece.
Preferably, one end of the second conductive connecting piece far away from the first conductive connecting piece is connected with the external power supply assembly and the switch assembly through a lead.
Compared with the prior art, the invention has the beneficial effects that:
the invention can realize the rapid heat dissipation and cooling of the printing roller, prolongs the service life of the printing roller, the printing roller body is provided with a roller cavity and a roller wall, the cold air box is used for primarily dissipating heat of the roller surface, the heat conduction layer I arranged on the roller wall is used for absorbing and transferring the heat of the roller surface to the heat conduction layer II, the heat conduction layer II absorbs the heat and cools the heat through the cold end of the refrigerating sheet inside the heat conduction layer II, the cooling efficiency of the printing roller is improved, the invention is obviously different from the water cooling technology in heat transfer medium and heat transfer mechanism, can realize the accurate refrigeration of an internal heat source, the hot end of the refrigerating sheet is clung to the heat dissipation support column for refrigeration, the heat emitted by the refrigerating sheet is led out by the heat dissipation support column, the heat is led to the heat conduction block by the heat dissipation support column, and the heat conduction block is cooled by the forced convection caused by the rotation of the heat dissipation fan, the heat dissipation of the heat dissipation support is realized, and the printing quality is improved; the arranged refrigerating sheet is connected with the second conductive connecting piece through the first conductive connecting piece, and the first conductive connecting piece and the second conductive connecting piece are both annular, so that the winding condition can not occur when the printing roller body rotates.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a printing roll body according to the present invention;
fig. 3 is a schematic structural diagram of a cold air box.
In the figure: 1. a printing frame; 2. a printing roller body; 21. a roll wall; 211. a roll cover; 212. a first heat conduction layer; 213. a second heat conduction layer; 22. a roll cavity; 3. connecting columns; 4. a power supply component; 5. a heat radiation fan; 6. a refrigerating sheet set; 7. a heat conducting block; 8. a heat dissipation strut; 9. a cold air box; 91. a cooling fan; 92. a second refrigerating sheet; 10. a wire; 11. a first conductive connecting piece; 12. a second conductive connecting piece; 13. a positive conductive ring; 14. a negative conductive ring; 15. an insulating layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-3, the present invention provides a technical solution: a printing roller cooling device for printing equipment comprises a printing frame 1, a printing roller body 2 and a cooling structure, wherein the printing roller body 2 is arranged on the printing frame 1 through a connecting column 3, and the printing roller body 2 comprises a roller wall 21 and a roller cavity 22; the roller wall 21 is provided with a roller surface layer 211, a first heat conduction layer 212 and a second heat conduction layer 213, the first heat conduction layer 212 is arranged on the inner side of the roller surface layer 211, and the second heat conduction layer 213 is arranged on the inner side of the first heat conduction layer 212; the cooling structure comprises a cooling fan 5, a refrigerating fin group 6, a heat conducting block 7 and a cooling strut 8, the cooling strut 8 is arranged in the roller cavity 22 and is provided with the refrigerating fin group 6, and the refrigerating fin group 6 comprises a plurality of connected refrigerating fins I; the heat-conducting blocks 7 are arranged on two outer sides of the printing roller body 2 and connected with the heat-radiating support columns 8, the heat-radiating fans 5 are arranged on the connecting columns 3, and the heat-radiating fans 5 rotate when the connecting columns 3 rotate and cool the heat-conducting blocks 7 through forced convection caused by the rotation of the heat-radiating fans.
In this embodiment, the end face of the printing frame 1 close to the printing roller body 2 is provided with a cold air box 9, a cooling fan 91 and a second cooling plate 92 are arranged in the cold air box 9, and the output end of the cooling fan 91 is opposite to the second cooling plate 92.
In this embodiment, the first cooling fin is mounted on the heat dissipation support 8, and the hot end of the first cooling fin is tightly attached to the heat dissipation support 8, and the cold end of the first cooling fin is tightly attached to the second heat conduction layer 213.
In the present embodiment, the first heat conducting layer 212 and the second heat conducting layer 213 are a heat conducting silicone layer and a heat conducting sheet layer, respectively.
In the embodiment, the input end of the refrigerating fin group 6 is connected with a lead 10, and the lead 10 passes through one side end of the printing roller body 10 and the end of the connecting column 3 and is connected with a first conductive connecting piece 11.
In this embodiment, the inner side of the printing frame 1 connected to the connecting column 3 is provided with a second conductive connecting member 12, the second conductive connecting member 12 and the first conductive connecting member 11 have the same structure and are circular, and the second conductive connecting member 12 and the first conductive connecting member 11 include a positive conductive ring 13, a negative conductive ring 14 and an insulating layer 15.
In this embodiment, the insulating layer 15 is disposed between the positive conductive ring 13 and the negative conductive ring 14, and the positive conductive ring 13 and the negative conductive ring 14 on the first conductive connecting member 11 correspond to and are in close contact with the positive conductive ring 13 and the negative conductive ring 14 on the second conductive connecting member 12.
In this embodiment, the end of the second conductive connecting member 12 away from the first conductive connecting member 11 is connected to the external power supply module 4 and the switch module through wires.
The working principle is as follows:
the printing roller body 2 is arranged on a printing frame 1 through a connecting column 3, the printing roller body 2 is provided with a roller wall 21 and a roller cavity 22, a cold air box 9 on the printing frame 1 is opposite to the roller surface, the cold air box 9 is used for primarily radiating heat of the roller surface, a heat conduction layer one 212 arranged on the roller wall 21 is used for absorbing the heat of the roller surface and transmitting the heat to a heat conduction layer two 212, the heat conduction layer two 212 absorbs the heat and then cools and cools the heat through the cold end of a refrigerating sheet in the refrigerating sheet, the cooling efficiency of the printing roller is improved, the printing roller is obviously different from a water cooling technology in a heat transfer medium and a heat transfer mechanism, the accurate refrigeration of an internal heat source can be realized, the hot end of the refrigerating sheet is clung to a heat dissipation support column 8, the heat emitted by the refrigerating sheet is guided out by the heat dissipation support column 8 to a heat conduction block 7, and the heat conduction block 7 is cooled by utilizing the forced convection caused by the rotation of a heat dissipation fan 5 outside the heat conduction, the heat dissipation of the heat dissipation support column 8 is realized, and the heat dissipation cooling efficiency is improved; the refrigeration piece that sets up is connected through electrically conductive connecting piece 11 and electrically conductive connecting piece two 12, because electrically conductive connecting piece 11 all is annular with electrically conductive connecting piece two 12, consequently when printing roll body 2 rotates, can not take place the condition of wire winding. The quick heat dissipation cooling of printing roller can be realized, the life of printing roller has been prolonged, printing quality has been improved.
It is worth noting that: the whole device is controlled by the master control device, and the equipment matched with the control device is common equipment, so that the device belongs to the existing mature technology, and the electrical connection relation and the specific circuit structure of the device are not repeated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.