Instrument for detecting wall thickness of glass tube
A detector and glass tube technology, applied in the field of glass tube wall thickness detector, can solve unscientific, time-consuming and labor-intensive problems, achieve standard quality, improve sorting speed, and reduce labor intensity of workers
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[0021] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.
[0022] Optical principle of the present invention:
[0023] Such as figure 1 As shown, the present invention utilizes the good directivity of the laser, uses a semiconductor laser to shoot at a certain angle to the online glass tube and is perpendicular to its busbar, and calculates the wall thickness by measuring the displacement of the reflected light from the inner and outer busbars of the glass tube. Contact, high-speed measurement. The measurement formula is as follows:
[0024] H=D*(n 2 -sin 2 a) 1 / 2 / sin2α
[0025] In the formula: H is the wall thickness of the glass tube; D is the displacement of the reflected light;
[0026] α is the laser incident angle; n is the glass refractive index.
[0027] After the instrument is installed, the α angle is a fixed value, and it can be seen that the wall thickness H is proportional to...
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