Resumen
Apparatus and method for measuring and regulating the cross-linking density in the hot and cold treatments of lightened glass, based on measuring the reflection of polarized radiation emitted by the treatment. The apparatus comprises a base for setting the angles and planes of polarization and incidence, with a head for the emission and reception of the polarized radiation; a central unit for amplification and processing of the received signal, with control of the treatment dosage; and a printer for recording the results obtained. <IMAGE>
Reivindicaciones
1. Apparatus for measurement and control of the density of crosslinking of heat and cold treatments of lightened glass, characterized by having a plinth for positioning the object to be measured, with a radiation emitting head and a receiver at which the reflected radiation due to the crosslinking of the treatment arrives; a central unit which processes the measured data and controls a treatment metering circuit; and a printer which records the final values of the measurements taken after the calculations performed in the central unit. 2. Apparatus according to Claim 1, characterized by having a radiation emitting head with a variable angle of incidence, cancelling out the radiation reflected from the glass by means of a polarizer situated in front of the receiver, which records only the reflected radiation due to the crosslinking of the treatment. 3. Apparatus according to Claims 1 and 2, characterized in that the polarization systems are the emitters and receivers themselves polarized beforehand. 4. Apparatus according to Claims 1 to 3, characterized in that the plinth or frame fixes the position of the specimen to be measured, which allows it to be automatically centred. 5. Apparatus according to Claim 4, characterized in that the plinth or frame is provided with motorized movement which adjustable in speed and direction. 6. Apparatus according to Claims 1 to 5, characterized in that the head is provided with motorized movement, which is adjustable in speed and direction, in order to make it possible to take point, longitudinal, perimetral and spiral readings, in a manual or automatic process. 7. Apparatus according to Claims 1 to 6, characterized in that the emitter of the head is fed by the central unit intermittently in order to eliminate the effect of ambient radiation. 8. Apparatus according to Claims 1 to 7, characterized in that the receiver of the head alternately picks up an ambient signal and an ambient signal plus the measurement signal. 9. Apparatus according to Claims 1 to 8, characterized in that the signals recorded in the receiver of the head of the central unit are taken to a logarithmic amplifier coupled to a microprocessor which calculates and stores the differential result. 10. Apparatus according to Claims 1 to 9, characterized in that the central unit is equipped with a metering control circuit which regulates the speed of the metering pumps depending on the values which it receives on the crosslinking density of the treatment which are measured by the receiver of the head. 11. Apparatus according to Claims 1 to 10, characterized in that the metering control circuit is assigned a standard signal of treatment crosslinking density which, depending on the readings recorded in the receiver, determines the speed of the metering pumps. 12. Apparatus according to Claims 1 to 11, characterized in that the central unit, depending on the recordings detected in the receiver and comparing them with the standard assigned value, sends out optical and/or audible alarm signals. 13. Apparatus according to Claims 1 to 12, characterized in that the central unit displays the data measured via visual, digital or pointer-type indicators. 14. Apparatus according to Claims 1 to 13, characterized in that the final recordings calculated in the central unit are printed on a special-purpose printer of small size, coupled to the central unit, which displays data on: company, production line number, date, time and measurement of the treatment, with an indication of when and which material measured is not within the desired values. 15. Method of measurement and control of the density of crosslinking of heat and cold treatments of lightened glass, characterized in emitting polarized radiation which is incident on the surface of the transparent or translucent glass. 16. Method of measurement and control of the density of the crosslinking of heat and cold treatments of lightened glass according to Claim 15, characterized in polarizing the radiation from the emitter in a plane perpendicular to the incidence plane and in the latter being equal to the plane of polarization of the glass, only the reflection due to the crosslinking of the treatment being picked up in the receiver. 17. Method of measurement and control of the density of the crosslinking of heat and cold treatments of lightened glass according to Claim 15, characterized in polarizing the radiation from the emitter in any direction and the radiation being incident on the surface of the glass at any angle, the reflected radiation being polarized destructively for the glass, by means of a polarizing system situated in front of the receiver, and recording solely the reflection due to the crosslinking of the treatment.
