Abstract:

An analysis of the structure of warp-knitting machines shows a great variety of the parameters of the knitting zone geometry, rigidity and attenuation of the tension rail system, a coefficient of friction of the threads against guiding elements and the character of the kinematic input function of loop forming elements. In the process of technical design, the constructors concentrate on the kinematics and dynamics of the components of the machine, the kind and properties of the materials used, optimisation of overall constructional dimensions etc. In many cases the aspects concerning the technology of manufacturing knitted fabrics are ignored at the stage of assumptions and design concepts. A significant element in the modelling of the construction design of a warp-knitting machine is the process of optimisation of the machine feeding parameters, considering the minimum load of the threads being fed. This paper presents a simulation of the feeding zone in order to analyse and optimise its working conditions.