Impact of Whip Roller Parameters on Warp Dynamic Loads for 3D Fabrics Made on a Four-Comb Warp-Knitting Machine

• Autorzy: Michalak Andrzej , Kuchar Maciej , Mikołajczyk Zbigniew

Identyfikatory

DOI

10.2478/aut-2019-0025

• Języki publikacji: EN

Abstrakty

EN

The most advantageous geometry of the warp feeding system was determined from the viewpoint of compensating temporary changes in the warp length during the technological cycle of a four-comb warp-knitting machine. Dynamic simulations of the feeding system were carried out for 3 different lengths of the shift of the slider with a guide bar – designating variants (series) of the cross-sectional sizes of the 3D knitted fabrics. The courses of instantaneous warp tensions during the operating cycle of the warp-knitting machine were presented. Limit dynamic loads of the warp were determined and presented as a function of natural frequency of the whip roller. Based on the criterion of the smallest dynamic loads of the warp, the optimum natural frequencies of the whip roller were determined. In the analyzed range of the whip roller parameters, they are 3–6 times greater than the operation frequency of the warp-knitting machine.

Słowa kluczowe

EN

warp tension; whip roller; warp feeding system; natural frequency; stiffness

PL

napięcie osnowy; wałek; system podawania osnowy; częstotliwość naturalna; sztywność

• Wydawca: Lodz University of Technology, Faculty of Material Technologies and Textile Design
• Czasopismo: Autex Research Journal
• Rocznik: 2020
• Tom: Vol. 20, no. 1
• Strony: 73--77
• Opis fizyczny: Bibliogr. 20 poz.

Twórcy

autor

Michalak Andrzej

• Department of Knitting Technology, Lodz University of Technology, 116 Żeromskiego Street, 90-924 Łódź, Poland

autor

Kuchar Maciej

• Department of Vehicles and Fundamentals of machine Design, Lodz University of Technology, 1-15 Stefanowskiego Street, 90-924 Łódź, Poland

autor

Mikołajczyk Zbigniew

• Department of Knitting Technology, Lodz University of Technology, 116 Żeromskiego Street, 90-924 Łódź, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).