Screen printer with LED UV ink curing light sources

Abstract

The invention discloses a screen printer with LED UV ink curing light sources. The screen printer with the LED UV ink curing light sources comprises a machine frame, wherein a plurality of printer color cells are arranged on the machine frame, the multiple LED UV ink curing light sources are arranged among the printer color cells, and the light-emitting surfaces of the multiple LED UV ink curing light sources are aligned with a printing surface of a printing material; each LED UV ink curing light source comprises a power source circuit substrate, wherein an LED UV light-emitting module and / or LED UV light-emitting beads are installed on the power source circuit substrate and are all composed of a plurality of UV light-emitting semiconductors which are LED UV light-emitting elements, and the light-emitting wave length range is 200-500 nm. The screen printer with the LED UV ink curing light sources does not generate mercury and harmful gas, the needed voltage is low, production safety problems are avoided, preheating is not needed in the use process, the service life is as long as 25000-30000 hours, a shutter component is not needed as the temperature is not high and preheating is not needed, and the production cost is reduced.

Description

technical field [0001] The invention relates to a screen printing machine provided with an LED UV ink curing light source. Background technique [0002] Screen printing belongs to stencil printing. When the screen printing machine is printing, a certain pressure is applied to the screen plate through the scraper to make part of the mesh of the screen plate pass through the ink and print on the substrate to form a graphic, and the rest of the mesh on the printing plate is blocked. , can not pass through the ink, forming a blank part on the substrate. [0003] In traditional technology, screen printing machines generally use solvent-based inks for printing. Traditional solvent-based ink printing needs to be dried by air drying or infrared drying, which often takes several minutes or even tens of hours of drying time. Print quality issues such as smearing occur. However, UV (Ultraviolet, referred to as UV, that is, ultraviolet) ink is used for printing. Under the radiation o...

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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