20.500.12556/RUL-125649 Optimizacija prototipa sesalca za polimerne filamente Optimization of a vacuum suction prototype for polymer filaments Med procesom proizvodnje polimernih filamentov je treba za zagon navijalnih avtomatov in pri menjavi kolutov manipulirati s filamenti. Za ta namen se v industriji uporabljajo sesalne pištole na stisnjen zrak. Zaradi velikih izgub pri pripravi stisnjenega zraka je bil razvit prototipni sesalec na podtlak. V nalogi smo sesalcu izboljšali in izmerili sesalno karakteristiko. Določili smo obratovalne točke sesalnih pištol in simulirali tok zraka v posamezni šobi. Na merilni postaji smo izmerili silo napetja niti. Izboljšan prototip sesalca s sesalno pištolo na podtlak prihrani več kot pol energije za dosego primerljive sile napetja kot sesalna pištola na stisnjen zrak. Obenem sesalna šoba na podtlak ne generira vozlov na niti in tako ne doseže potrebne sile za pretrg. During the production process of polymer filaments, it is necessary to manipulate the filaments to start the winding machines and to change the winding bobbin. Compressed air suction guns are used in the industry for this purpose. Due to large losses in the preparation of compressed air, a vacuum suction prototype was developed. In the thesis, we improved and measured the suction characteristics. We determined the operating points of the suction guns and simulated the airflow in each nozzle. We measured the tension force of the thread at the measuring station. An improved vacuum suction prototype with a vacuum suction gun saves more than half the energy to achieve a comparable tension force than a compressed air suction gun. At the same time, the vacuum suction nozzle does not generate knots on the threads and thus does not reach the required force to tear filaments away from the bobbin. sesalne pištole karakteristika sesalne enote podtlak sila na nit tokovne razmere merilna postaja suction gun suction motor characteristics vacuum tension force of the thread fluid flow characteristics measuring station true false false [R. Sedmak] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2021-03-30 08:30:59 2021-03-30 08:31:03 2023-11-20 12:33:04 0000-00-00 00:00:00 2021 0 Ljubljana 0 XXII, 55 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.51:62-225:531.78(043.2) 228360 61312771 6887.pdf 6887.pdf 1 3205B9E8CD3D871BD0C8822ED74AF97B 354a6b8de70e98c5c391829f32896f3d2f979a3c1d22ff16ee3ffade4f47e924 c2236d84-a1bb-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=141468 Fakulteta za strojništvo 0 0 0