Electrodeless lamp UV curing coating or printing equipment

Abstract

The invention discloses electrodeless lamp UV curing coating or printing equipment. The electrodeless lamp UV curing coating or printing equipment comprises an unwinding unit, an unwinding traction unit, a coating or printing unit, a winding traction unit and a winding unit which are arranged in sequence. Electrodeless lamps are arranged at the output end of or behind the coating or printing unit.Each electrodeless lamp comprises a fixed base, wherein a microwave generator, a waveguide device, a lamp tube and a shielding net are arranged on each fixed base; the waveguide device is provided with an inner cavity with a downward opening; the output end of the microwave generator and the lamp tube are both located in the inner cavity; the shielding net is mounted at the opening of the inner cavity; and a resonant cavity is formed between the output end of the microwave generator, the waveguide device and the shielding net. The irradiance of the electrodeless lamps is high, and the coatingor printing efficiency can be improved. The electrodeless lamps have lower thermal radiation than mercury lamps. The electrodeless lamps can be used for curing a thermosensitive material. Each electrodeless lamp composed of the microwave generator, the waveguide device and the lamp tube is simple in structure, low in light attenuation and long in service life. The situation that production and processing are affected by frequent replacement of a UV light source is avoided.

Description

technical field [0001] The invention relates to an electrodeless lamp UV curing coating or printing equipment. Background technique [0002] Traditional coating equipment or printing equipment are coated with solvent-based coatings or water-based coatings, dried by hot air, and then rewound after cooling. These coating equipment or printing equipment are likely to cause the residual solvent of the product to exceed the standard, and use hot air to dry, The heating power is large, the energy consumption is high, and the exhaust also pollutes the environment. [0003] For this reason, at present, there are coating equipment or printing equipment that use UV light sources to replace hot air drying on the market. However, the existing UV light sources are mainly two types, namely LED lamps and mercury lamps. The light sources of these two types of UV light sources The energy conversion rates are all less than 30%, and the decay rate of the light source is relatively fast under ...

AI Technical Summary

Problems solved by technology

[0002] Traditional coating equipment or printing equipment are coated with solvent-based coatings or water-based coatings, dried by hot air, and then rewound after cooling. These coating equipment or printing equipment are likely to cause the residual solvent of the product to exceed the standard, and use hot air to dry, High heating power, high energy consumption, exhaust also pollutes the environment

[0003] For this reason, at present, there are coating equipment or printing equipment that use UV light sources to replace hot air drying on the market. However, the existing UV light sources are mainly two types, namely LED lamps and mercury lamps. The light sources of these two types of UV light sources The energy conversion rate is less than 30%, and the light source decays faster under normal use

Among them, mercury lamps have high thermal radiation on the surface of coating materials, which may easily cause the substrate to be stretched and affect product quality, and cannot be used for curing temperature-sensitive materials. Moreover, mercury lamps have a short lifespan and often need to be shut down for replacement; The irradiance of the LED lamp is low, resulting in a slow rate of coating and printing, and the quality of UV curing of products with thick coating thickness cannot be guaranteed

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