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CN-224201677-U - Water cooling device of high-efficiency cooling LED of relief printing machine

CN224201677UCN 224201677 UCN224201677 UCN 224201677UCN-224201677-U

Abstract

The utility model discloses a water cooling device of an efficient cooling LED of a letterpress printing machine, which relates to the technical field of LED cooling of printing machines and comprises a shell, wherein a circuit board is fixedly connected to the lower side of the shell, lamp beads are fixedly connected to the lower surface of the circuit board, a cooling assembly is installed in the shell, the cooling assembly comprises a first radiating fin fixedly installed in the shell, a main cooling pipeline penetrates through the inside of the cooling assembly, a connecting shell is detachably connected to the shell, a second radiating fin is fixedly connected to the inside of the connecting shell, the second radiating fin is mutually abutted to the first radiating fin, an expansion cooling pipeline penetrates through the inside of the second radiating fin, a cooling fan is fixedly connected to the top of the connecting shell, a dust cover is arranged on the outer wall cover of the cooling fan, a filter plate is slidingly connected to the inside of the connecting shell close to the lower side of the cooling fan, and air outlets are distributed on the side wall of the connecting shell below the filter plate. The utility model forms a double heat dissipation guarantee mechanism with water cooling as a main component and air cooling as an auxiliary component, and can rapidly and continuously lead out the heat generated by the lamp beads.

Inventors

  • YI FAN
  • WEI YOUBIN

Assignees

  • 长沙市科辰印刷有限公司

Dates

Publication Date
20260505
Application Date
20250704

Claims (6)

  1. 1. The water cooling device for the efficient cooling LED of the letterpress printing machine comprises a shell (1) and is characterized in that a circuit board (2) is fixedly connected to the lower side of the shell (1), a lamp bead (3) is fixedly connected to the lower surface of the circuit board (2), a cooling component is installed in the shell (1), the cooling component comprises a first cooling fin (4) fixedly installed in the shell (1), a main cooling pipeline (5) penetrates through the inner portion of the first cooling fin (4), a connecting shell (11) is detachably connected to the shell (1), a second cooling fin (6) is fixedly connected to the inner portion of the connecting shell (11), the second cooling fin (6) is mutually abutted to the first cooling fin (4), an expansion cooling pipeline (7) is fixedly connected to one end of the second cooling fin (6) through the connecting component, a fan (12) is fixedly connected to the top of the connecting shell (11), a dust-proof cover (12) is arranged on the outer wall of the connecting shell (1), and the dust-proof cover (13) is arranged on the side of the connecting shell (14) and is connected to the side of the lower side of the filter plate (14).
  2. 2. The water cooling device for the LED with the high-efficiency cooling effect of the letterpress printing machine according to claim 1, wherein the side wall of the connecting shell (11) is provided with an open slot, the filter plate (14) is installed in the connecting shell (11) in a drawable manner through the open slot, one side, close to the filter plate (14), of the outer wall of the connecting shell (11) is rotationally connected with a rotating pin (15), the outer wall of the filter plate (14) is provided with a buckle (16), and the rotating pin (15) is fixedly clamped with the buckle (16).
  3. 3. The water cooling device for the high-efficiency cooling LED of the relief printing machine according to claim 1, wherein the connecting assembly comprises a connecting female head (8) arranged at the end part of the main cooling pipeline (5) and a connecting male head (9) arranged at the end part of the expansion cooling pipeline (7), wherein the connecting male head (9) is inserted into the connecting female head (8), and a sealing ring (10) is arranged between the connecting male head and the connecting male head.
  4. 4. The water cooling device for the high-efficiency cooling LED of the relief printing machine according to claim 1, wherein a plurality of connecting columns (17) are fixedly connected to the periphery of the top of the shell (1), concave annular limiting grooves are formed in the side walls of the connecting columns (17), a plurality of connecting sleeves (18) corresponding to the connecting columns (17) are arranged on the connecting shell (11), and clamping components clamped with the limiting grooves of the connecting columns (17) are arranged in the connecting sleeves (18).
  5. 5. The water cooling device of the efficient cooling LED of the relief printing press of claim 4, wherein the clamping assembly comprises a sliding rod (19) penetrating through the connecting sleeve (18), a hinge seat (20) is fixedly connected to the lower end of the sliding rod (19), rotating rods (21) are symmetrically connected to the two sides of the hinge seat (20) in a rotating mode, a clamping block plate (22) is rotatably connected to one end, away from the hinge seat (20), of the rotating rods (21), the middle portion of the clamping block plate (22) is rotatably connected with the inner wall of the connecting sleeve (18) through a rotating shaft, and a clamping block matched with a limiting groove on the connecting column (17) is arranged on the inner side of the lower end of the clamping block plate (22).
  6. 6. The water cooling device for the LED capable of efficiently cooling the letterpress printing machine according to claim 5, wherein a connecting plate (23) is fixedly connected to one side, close to the clamping block plate (22), of the bottom of the connecting sleeve (18), a spring (24) is connected between the clamping block plate (22) and the connecting plate (23), and the clamping block of the clamping block plate (22) is pushed to press the limiting groove inwards in a normal state by the spring (24).

Description

Water cooling device of high-efficiency cooling LED of relief printing machine Technical Field The utility model relates to the technical field of LED cooling of printing machines, in particular to a water cooling device for efficiently cooling LEDs of a relief printing machine. Background Relief printing presses are key devices in the modern printing industry, and in recent years, high-power ultraviolet light emitting diode (UV-LED) light sources have gradually replaced traditional mercury lamps in order to improve the ink curing speed, reduce energy consumption and meet environmental requirements, and become the mainstream curing technology. When the UV-LED works, the electro-optical conversion efficiency is usually only 30% -40%, and most of the residual electric energy can be converted into heat energy. If the heat cannot be timely and effectively LED out, the temperature of the LED chip is rapidly increased, light power attenuation and dominant wavelength drift can be caused, the quality of printed matters is affected, and the service life of the LED lamp beads can be seriously shortened, so that the design of a set of efficient and reliable cooling device is important for guaranteeing the stable operation of the relief printing machine. Currently, for heat dissipation of high-power LEDs, the prior art mainly adopts a single-mode heat dissipation scheme. One of the heat dissipation devices is air-cooled heat dissipation, and the heat dissipation fins with large area are arranged on the back surface of an LED substrate and are matched with a fan to conduct forced convection heat exchange. The technical principle is that the contact area between the metal radiating fin and the air is enlarged, and then the air flow is accelerated by the fan so as to take away the heat generated by the LED. However, as relief printing presses move to higher speeds and higher accuracy, the power density requirements for UV-LED light sources are also increasing, with a tremendous amount of instantaneous heating. In this case, the above-described single mode heat dissipation technique exposes its limitations. The simple air cooling system is limited by the heat dissipation volume and the fan efficiency, and the heat dissipation capacity of the simple air cooling system is difficult to meet the heat dissipation requirement of the LED module of a plurality of kilowatts, so that heat accumulation is easy to occur, and the temperature of the LED chip cannot be controlled in an ideal range. Therefore, in long-time and high-load continuous printing operation, the existing heat dissipation device often causes overheat of the LED due to insufficient heat dissipation capability, so that the light curing effect is unstable, the ageing and damage of the lamp beads are accelerated, and long-term stable operation of the printing machine cannot be ensured. Disclosure of Invention In order to make up for the defects, the utility model provides a water cooling device for a high-efficiency cooling LED of a relief printing machine, which aims to solve the problems that the existing heat dissipation device often causes overheat of the LED due to insufficient heat dissipation capability, causes unstable photo-curing effect, accelerates ageing and damage of lamp beads and cannot guarantee long-term stable operation of the printing machine. The water cooling device comprises a shell, wherein a circuit board is fixedly connected to the lower side of the shell, a lamp bead is fixedly connected to the lower surface of the circuit board, a cooling assembly is installed in the shell, the cooling assembly comprises a first cooling fin fixedly installed in the shell, a main cooling pipeline penetrates through the first cooling fin, a connecting shell is detachably connected to the shell, a second cooling fin is fixedly connected to the connecting shell, the second cooling fin is mutually abutted to the first cooling fin, an expansion cooling pipeline penetrates through the second cooling fin, one end of the main cooling pipeline is communicated with one end of the expansion cooling pipeline through a connecting assembly, a cooling fan is fixedly connected to the top of the connecting shell, a dust cover is arranged on the outer wall of the cooling fan, a filter plate is laterally connected to the inner side of the connecting shell, and air outlets are distributed on the side wall of the connecting shell, which is located below the filter plate. According to the technical scheme, the filter plate is installed in the connecting shell in a drawable mode through the open slot, a rotating pin is connected to one side, close to the filter plate, of the outer wall of the connecting shell in a rotating mode, a buckle is arranged on the outer wall of the filter plate, and the rotating pin is fixedly clamped with the buckle. As further description of the technical scheme, the connecting assembly comprises a connecting female head arranged at the end part of the m