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Choose the UV curing equipment device correctly

时间:2016-04-17 15:09来源:sankun点击:

Has skills in his right to choose the UV curing equipment device

  The UV curing device is able to make the available strong ultraviolet a kind of mechanical equipment. It has been widely used in printing, electronics, building materials, machinery and other industries. Types and styles of the UV curing devices because of its light solid varies according to the product, but its ultimate goal is consistent, is used for curing UV ink or UV light oil. UV curing device by a light source system, ventilation system, control system, transmission system and body parts.

A, light source system
  It is composed of UV lamp, lamp shades, transformer (ballasts) and capacitor (trigger).
  1. The UV lamp
  UV light points on the market at present two kinds of high pressure mercury lamp and metal halide lamp. Domestic equipment widely used high pressure mercury lamp, part of imported equipment using metal halogen lamp.
  (1) the choice of the UV lamp power. The UV lamp power of UV light radiant energy, also known as the penetration. First of all, it must meet the UV ink (light oil) absorption spectrum of the wavelength and power density. If the UV lamp power is not enough, even if the illumination, longer, UV curing unit the number of times, more products are not completely cured. Instead, still can make the UV printing ink (light oil) surface aging, closed, brittle, etc., at the same time, the adhesion of printing ink (light oil) is bad, will make dieyin poor adhesion between the layers. Because of the low power UV light cannot penetrate the ink layer at the bottom, the bottom not curing or inadequate curing.
  (2) the UV lamp power to meet the requirements of 80 ~ 120 w/cm, but the greater the power, the greater the heat will be, so to choose according to different curing and curing speed power.
  (3) the UV lamp is one of the biggest life generally for 800-800 hours, reached after should be replaced, because by this time period of the intensity of the ultraviolet light emitted by the UV lamp, can affect the curing effect. Also suggested that during the using period according to the production environment (air dust content), at the appropriate time with anhydrous ethanol clean tube surface and reflection on the surface of the reflector plate, then transfer the UV lamp 90 °. This is advantageous to the UV rays all effective radiation to UV ink or light oil, guarantee of penetration.
  2. The reflector
  The type of reflector has focus, the focus and more reflective surface. General type is focused. The structure characteristics of the reflector is the reflection of the UV light energy concentration, curing light with high efficiency, is beneficial to ink layer thick ink curing, can make the ink of the deep completely cured. In this regard should be paid attention to the material and shape of the reflector.
  (1) selection
  Must choose aluminous material, and does not choose iron or stainless steel, in order to save cost for stainless steel plate at high temperature becomes black, black but not after reflective effect, still can absorb light. Reflective effect is best mirror aluminum oxide, the reflectivity can reach more than 80%, thus greatly improve the utilization rate of ultraviolet light.
  (2) the shape
  The shape of the reflector is guaranteed to UV light together, so choose a half arc shape of the best. Also note that the UV lamp erect position, in order to make sure it in focus. In addition, the reflector is an important channel of the UV lamp heat dissipation, so to cover the outside of the processed into aluminum radiator, increase the cooling area.
  Reflector in UV curing device plays a very important role. Some manufacturers often ignored the role of it, and use some alternatives to act as a reflector, even not to install the reflector, such making that UV ultraviolet lamp 40% - 50% of energy is wasted. And some of the manufacturer's response to improve the UV lamp power blindly, not only can not fundamentally solve the problem, also can cause more waste of electric power.
  3. The transformer
  The selection of the transformer must be matched with the UV lamp power, namely the transformer must have enough output voltage, to ensure that the UV lamp can work at full power. If the output voltage is too high can make the lamp burn; But the output voltage is too low, lamp and can't work at full power, so that the uv output intensity.
  4. The capacitor
  The capacitor should be selected with the tubes and the matching of the transformer, according to the output voltage of transformer choose the withstand voltage of capacitor used degree. If the wrong choice will make capacitance breakdown, affect the normal work of the UV curing equipment.

B, ventilation system
  It consists of fan, air duct, the wind mask. Here is that should be paid attention to the choice of fan and air volume control and ventilation.
  1. The selection of the fan according to the UV lamp power and the actual situation of housing space. General distribution and two wind turbine wind, but there are only equipped with a wind fan. Fan power is not enough, not enough leads to exhaust air temperature inside the case, lamp life shortened, melt, even also make curing product quality difficult to guarantee; Air volume of fan power if too large, will make the temperature inside the case is too low, the UV lamp can not work at full power, curing is not easy to dry.
   2.  refers to the control of UV curing device of air volume should be adjustable. This is because want to consider the summer and winter temperature difference is very big, many factories do not have a constant temperature workshop, so if the UV curing devices with the same air in winter and summer work will affect the quality of the products. Usually use the method of temperature control to control two fan, reaches a certain temperature is automatically restart a fan, to reach a certain temperature and then start another fan, and shifting is set on the exhaust and the air inlet valve to control the intake and exhaust air volume.
  3. The exhaust air way is to take on lead wind supply air or air supply on the wind, etc. But either way, not the wind blows directly to the UV lamp, because the consequences of doing so is to make the UV lamp for heat loss is too big and not full power work (changed from white to not dazzling light blue), make the ink doesn't dry.

C, the control system
  It is used to control the whole light solid machine work system. It is worth noting here:
  1. The fan control by the best temperature automatic control section before (), because there may be omissions control by people, is not precise enough.
  2. Should first turn on the light when the phone is switched on, 2-3 minutes to open the fan (fan not temperature control).
  3. After shutdown shall take the fan continues to run, until the tubes and the box body cooling.
  4. The second starting to wait until completely cooling tubes starting.

D, transfer system
  It is composed of speed regulating motor (or frequency control of motor speed), transmission mesh belt, chain (or transfer roller). Here is speed adjustment problems should be paid attention to. The curing speed should consider two aspects of the song, it is fully cured, second is the best curing speed.
  Optimum speed selection method is: will the product first by UV curing devices at a certain speed, if the curing, to speed up again, until the ink layer of the product through UV curing device out can't cure. The velocity of the then multiplied by 0.8 is the best. Also should pay attention to the use time of the tubes, as the UV lamp use energy attenuation, accordingly, the speed is slow.

E, housing
  The size of box body is on the application of UV curing devices of different products. That should be paid attention to this aspect is: to make the surface smooth, inside the light to illuminate the place should be a sandwich, and as far as possible to avoid casing external temperature burns. The external should not have the light leak. In a word, in order to make the UV curing device can safe and normal operation, curing light to achieve the best effect, should be paid attention to more than a few part of all, any link can not be ignored.

TAG:UV equipment(10)