Patent HR-P20211094-A1 (HR)
Inventor: ROGALE DUBRAVKO
IPC: G01B3/22
Filed: 2021-07-09
Abstract: Uređaj i metoda za ispitivanje karakteristika spojeva nastalih visokotehnološkim tehnikama spajanja polimernih materijala gdje se ispitivani uzorak (1) postavlja u nepokretnu čvrstu stezaljku (2) i na pomičnu stezaljku u senzoru dinamometra (3). Dinamometar (4) ima koračni motor za određivanje napetosti uzorka (5) i zaslon (6) za očitanje vrijednosti sile te mjerilo (7) istezanja uzorka. Debljinu istisnutog ruba na spoju ili debljine spoja mjeri mehanizam s kapacitivnim pretvornikom (8) koji ima pridodan mehanizam (9) za postavljanje pritiska ticala (10) šiljastog oblika s blago zaobljenim vrhom. Izvor svjetlosne zrake (11) služi za pozicioniranje linije za praćenje ispitivanih pozicija, odnosno profila spoja. Za mjerenja su potrebna četiri koračna motora: za horizontalni „Y“ grubi pomak ispitivanog uzorka na početnu poziciju mjerenja neravnina motor (17), za horizontalni, fini, sukcesivni, mjerni „Y“ pomak ispitnog mehanizma sa senzorom pri mjerenjima neravnina ispitivanog uzorka motor (12) po profilu spoja, za vertikalni „Z“ pomak ispitnog mehanizma sa senzorom motor (13) (za podizanje mehanizma pri promjeni pozicije mjerenja) uz prikaz izmjerene debljine na zaslonu (14) i uz praćenje i snimanje dijelova spoja kamerom (15). Za horizontalni „X“ pomak ispitivanog uzorka na novu poziciju mjerenja neravnina služi motor (16). Uređaj još posjeduje visoko poliranu podlogu za ispitivanje uzoraka (18), izvore svih potrebnih napona električnog napajanja (19), mjerno računalo (20) s A/D pretvornicima, međusklopovima i potrebnom programskom podrškom te stezaljke s utezima (21) za zatezanje po širini ispitnog uzorka.Device and method for examination of characteristics of seams produced by high-tech joining techniques of seaming polymeric materials, where the tested sample (1) is placed in a fixed firm clamp (2) and on a movable clamp in the dynamometer sensor (3). The dynamometer (4) has a stepper motor for determining the tension of the sample (5) and a screen (6) for reading the force value and a scale (7) for stretching the sample. The thickness of the extruded edge on the seam or the thickness of the seam is measured by a mechanism with a capacitive converter (8) which has an additional mechanism (9) for setting the pressure of the probe (10) of a pointed shape with a slightly rounded tip. The light source (11) is used for positioning the line for monitoring the examined positions, that is, the seam profile. Four stepping motors are required for the measurements: for the horizontal "Y" coarse movement of the tested sample to the starting position of the unevenness measurement, the motor (17), for the horizontal, fine, successive, measuring "Y" movement of the test mechanism with the sensor when measuring the unevenness of the tested sample, the motor ( 12) according to the profile of the seam, for the vertical "Z" movement of the test mechanism with the motor sensor (13) (for lifting the mechanism when changing the measurement position) with the display of the measured thickness on the screen (14) and with the monitoring and recording of the parts of the seam with a camera (15). The motor (16) is used for the horizontal "X" movement of the tested sample to the new position of unevenness measurement. The device also has a highly polished surface for testing samples (18), sources of all necessary voltages of the electrical supply (19), a measuring computer (20) with A/D converters, intermediate circuits and the necessary software support, and clamps with weights (21) for tensioning across the width of the test sample.