LED UV light source used for solidifying flexible or rotation or trademark printing machine UV printing ink

Abstract

The invention discloses an LED UV light source used for solidifying flexible or rotation or trademark printing machine UV printing ink, and the LED UV light source used for solidifying flexible or rotation or trademark printing machine UV printing ink comprises a power supply circuit board, an LED UV light-emitting module and / or LED UV ultraviolet light light-emitting lamp bead are / is mounted on the power supply circuit board; the LED UV light-emitting module and the LED UV ultraviolet light light-emitting lamp bead are respectively composed of a plurality of ultraviolet light-emitting semiconductors; the ultraviolet light-emitting semiconductor is the LED ultraviolet light-emitting device, and the light-emitting wavelength range is 200nm-500nm. The LED UV light-emitting module and the LED UV ultraviolet light light-emitting lamp bead are fixed on the power supply circuit board through the heat-conducting glue. The LED UV light source used for solidifying flexible or rotation or trademark printing machine UV printing ink overcomes the shortcomings of the conventional UV mercury lamp, the power is low, the electric energy is saved; the mercury and the harmful gas are not generated; the voltage is low, the safety problem is avoided; pre-heating is not required and the service life is long for 25000-30000 hours; the shutter part is not needed while the high temperature and pre-heating are not required, so that the production cost is reduced.

Description

technical field [0001] The invention relates to an LED UV light source used for curing UV ink of a flexographic or rotary or trademark printing machine. Background technique [0002] The flexographic printing machine uses fluid ink with strong fluidity. The ink is transferred to the graphic part of the printing plate by the ink fountain rubber roller and the anilox roller to make it inked, and then the printing pressure is applied by the pressure roller to press the printing plate The ink on the surface is transferred to the substrate, and finally the printing process is completed on the dry side. [0003] The printing principle of the rotary offset press is basically the same as that of the sheet offset press. However, due to the high printing speed of the rotary press, the simultaneous printing of the front and the back, and the automatic folding device, an eight-color commercial rotary press is very bulky. Of course, its printing efficiency is also very high. According ...

AI Technical Summary

Problems solved by technology

Yet this UV mercury lamp that is used for curing ink has the following problems: (1) in the UV mercury lamp, mercury, iron and harmful gases containing heavy metals are more serious to air pollution, to the injury of human body and equipment, Harm the health of operators; (2) Traditional UV mercury lamps are mainly driven by 1500V-2000V high voltage, normally about 20KW each, and the power converted into useful ink curing effect is only one-tenth. And it must be preheated, and the practical life is only about 1000 hours. After being scrapped, the heavy metal mercury, iron and argon gas added in the lamp tube will cause irreparable damage to the environment; (3) UV mercury lamp needs to remove the mercury in the tube cavity Ultraviolet rays can only be emitted after atomization, and the temperature needs to be above 600°C. Among them, only 15%-25% of ultraviolet rays are used for UV ink curing, and more than 50% of infrared rays. The heat release is large, and it has a great impact on the printing environment, human body, and equipment. Hazards (4) Due to the reason for the production of the UV mercury lamp, the two ends of the lamp tube and the middle of the lamp tube emit uneven light, resulting in uneven curing of the UV ink on the printed matter, and in severe cases, the printed matter is scrapped in batches; According to the spectrum required for UV ink curing and the length of the printing format, the emitted ultraviolet rays can be adjusted to the spectrum required for UV ink curing, and the length of the curing format required for printed UV inks cannot be adjusted, resulting in a great waste of energy.

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