How to correctly choose UV curing device

    UV curing device is able to issue the strong ultraviolet rays can be used as a machinery and equipment. It has been widely used in printing, electronics, building materials, machinery and other industries. UV-curing devices by type and style of its solid-ray products vary, but its ultimate goal is the same, and is used UV-curable ink or UV varnished. UV curing device from the light source systems, ventilation systems, control systems, transmission systems, and several parts box. First, it is by the UV light source system lamp, lamp shades, transformers (ballasts), capacitors (Trigger) component. Lamp 1.UV currently on the market at high pressure mercury lamp UV lamps and metal halogen two.

   Domestic equipment commonly used high-pressure mercury lamp, some imported equipment metal halogen lamps.

    (1) UV lamp power option. UV lamp power that is, UV light radiation energy, also known as penetration. First, it must meet the UV inks (Oil) absorption spectra of wavelength and power density requirements. If the UV lamp power is not enough time even if the light long after the number of UV-curing device more, the product also can not completely curable. In contrast, will make UV inks (Oil) surface aging closed, crisp and so on, at the same time ink (Oil) is not a good adhesion will overprint the poor bonding between layers. Because the low-power UV light can not penetrate the墨层at the bottom, so that the bottom is not curable or inadequate curing.

    (2) UV lamp power in general to meet the requirements of 80 ~ 120W/cm, but also the greater the power the greater the heat, so according to curing and the curing rate of different materials to choose power.

    (3) UV lamp life is generally the largest 800 - 1000 hours, reached shall be replaced, because this time the launch of UV light intensity of UV-ray weak, would affect the curing effect. At the same time period in accordance with the recommendations in the use of the production environment (dust concentration in the air) is different at the appropriate time to use ethanol clean tube surface and cover the surface reflection sounding board, and then UV lamp to 90 °. This is conducive to all the effective UV-ray radiation to the UV ink or varnished ensure a certain degree of penetration.

     2. Reflector

    Reflector types of focused, non-focused and multi-faceted reflective. Generally using a focused. This Reflector is reflective of the structural characteristics of the UV light energy concentrated, high-efficiency light-cured and is conducive to墨层thick ink curing can completely curable ink deep. In this regard it should be noted that reflective material and shape of the hood.

    (1) The selection will surely opt for aluminum, but not in order to save the cost of the choice of iron or stainless steel, as stainless steel plate at a high temperature will be black, will not play after dark reflective role, but also absorption. The best course of reflective aluminum mirror plate, the reflectivity of up to 80%, thus greatly improve the utilization of ultraviolet light.

    (2) cover the shape of the shape of reflection is to ensure that UV light can come together, so choose the best semi-circular shape. We must pay attention to the location of UV lamp set up to ensure that the focus on it. In addition, UV light reflex enclosures is an important gateway for cooling, it should cover the outside of aluminum processed into the radiator, increasing the cooling area. Reflector in the UV curing device to play a very important role. Some manufacturers tend to ignore its role, while the use of alternatives to serve as a reflex enclosures, do not even cover the installation of reflection, so that UV light so that 40% -50% of the UV energy was wasted. Some manufacturers of response is simply to enhance the UV lamp power, do so not only can not fundamentally solve the problem, it will result in much wasted energy.

    3. Transformer transformer option must be consistent with UV lights to match the power, that is, there must be sufficient transformer output voltage to ensure that UV light can work in full power. If the output voltage is too high would lamp burning; and output voltage too low, the lamp can not work full power, so that the output of ultraviolet strength.

    4. Capacitor capacitor selection should be matched tubes and transformers, according to the output voltage transformer used to choose the level of capacitor voltage. If you choose it will capacitance improper breakdown, the impact of UV-curing device to work properly.

    Second, the ventilation system by the fans, cited the wind pipe, composed of poly wind shield. Here it should be noted that the choice of fans and wind volume control and exhaust way.

     1. Fan choice to power under the UV lamp and cabinet space to determine the actual situation. General distribution to wind and wind cited two fans, but there are only equipped with a fan cited wind. Fan power shortage, lack of ventilation volume will lead to the chassis temperature is too high, shorten the lamp life, or even melted, but also solidified the quality of the product difficult to be protected; fan power if too large, too much wind will make the chassis temperature is too low , UV light can not work full power, curing were not easy to dry.

     2. Air volume control means of UV-curing device air volume should be adjustable. This is because to take into account the temperature difference between summer and winter a great many factories do not have the constant temperature workshop, so if the UV curing device in winter and summer with the same air volume of work will certainly affect the quality of the product. Temperature control is generally used to control two fans, reaches a certain temperature automatically activated a typhoon on the machine, and then reach a certain temperature and then start another typhoon machine, and the exhaust and inlets to control valves for the breadwinner into the wind and the exhaust air volume.

     3. Exhaust the way is the wind taken quoted blast of air or wind, such as primers. But no matter what methods are not directly blown lookout UV lamp, because the consequences of doing so is to make UV light due to heat loss is too large and can not work full power (not into the light from the white glare of the blue), so that the ink is not dry. Third, the control system which is used to control the work of the entire light solid machine system.

     It is worth noting here:

     1. Blower control are best made by automatic temperature control (mentioned in the previous section), as from person to control may be imperfect, is also not sufficiently precise.

     2. Boot should first turn on the lights, 2-three minutes after the open air (when the fan is not temperature-controlled).