Foreword
In the production process of waterstops, the current method used by domestic manufacturers is the manual measurement method. It has hysteresis and is easily deformed, making measurement inaccurate and inconvenient for production maintenance and use. Laser measurement methods, measurement The accuracy can completely meet the needs of waterstop production. It is also a non-contact online measurement, and it has no radiation hazards, low cost, and strong practicality. Therefore, it is very suitable for application in waterstop plants.
1, the principle of measurement
The principle of laser thickness measurement is shown in the figure. The laser probe 1 and the laser probe 2 are arranged at a fixed distance A in the figure. During operation, the laser probe 1 emits a laser beam to irradiate the lower surface of the measured object, and the surface of the lower surface is diffuse. The reflected light is returned to the CMOS or CCD chip inside the laser probe 1, and the actual distance B1 from the laser probe 1 to the bottom surface of the measured object can be obtained by analyzing and calculating the position of the spot on the CMOS or CCD chip; The distance B2 between the laser probe 2 and the upper surface of the measured object can be obtained. The distance A between the two probes is subtracted from the two probes to the measured object. The distances B1 and B2 from the lower surface can be measured. Thickness H.
2, system components
The whole set of equipment includes thickness meter, main control cabinet, and large LCD display.
2.1, Thickness Gauge
The thickness gauge is the main part of the water stop thickness gauge. It has a laser probe, which is mainly installed on the production line to measure the thickness of the water stop tape. There are three groups of laser probes inside the laser thickness gauge. The heads are respectively mounted on the three slides of the linear guide through the probe holder. The probe holder is connected with the three sets of ball screws. When the servo motor drives the ball screw to rotate, the three probes can be separated. Adjustment and scanning action. Thickness gauge can be fixed-point measurement and scanning measurement.
2.2, Main Control Cabinet
The main control cabinet is used for data processing and analysis. At the same time, the display screen can display in detail the information required for the water stop, the internal control system of the main control cabinet, the communication system, and the industrial control computer, etc. The scanning operation of the head is controlled by measurement software or control buttons. The main control cabinet has stable performance and good effect.
2.3, large LCD screen
The large LCD display is mainly used for reading off-site measurement data, displaying the basic information of the measurement data, the data measured by the three laser probes, and displaying the operation status. When the measurement data is out of tolerance, the data will be out of tolerance. It will turn red.
3, water stop thickness gauge
Water stop thickness gauge is a high-precision measurement device, can bridge type, mountain type, P type, R type, U type, Z type, B type, T type, H type, E type, Q type and other water stop The online inspection of thickness dimension, data analysis and storage function, easy to understand the overall rolling state, the water stop thickness gauge is a high-precision on-line inspection equipment, automatic measurement system, effectively improve the detection efficiency and product quality.
Conclusion
After a period of operation, the developed laser thickness measurement terminal has features such as high accuracy, flexible operation, low cost, and detailed data. It has laid a solid foundation for the realization of automation of the whole plant.
This article consists of Baoding Lanpeng Measurement & Control Technology Co., Ltd. write
