Удосконалення системи подачі ниток на основі оптимізації пружної системи заправки круглов’язальних машин

Abstract

В роботі наведені результати досліджень по удосконаленню системи подачі ниток на основі оптимізації пружної системи заправки круглов’язальних машин з парасольковим шпулярником та виносним шпулярником. На основі аналізу умов взаємодії ниток з напрямними, нитконатягувальними приладами трикотажних машин, впливу геометричної форми лінії заправки нитки на її натяг, на ЕОМ за допомогою спеціально розробленого програмного забезпечення, отримані значення конструктивних пареметрів системи подачі нитки, які дозволяють знизити нерівномірність натягу та зменшити обривність нитки.

Imperfection of structural elements of the system of serve on round knittings machines results in the origin of salutatory increase of pull in the areas of contact with an uneven on a diameter filament, and it, in same queue, results in a precipice. In addition, the form of line of priming of filament on a knitting equipment influences on the increase of pull from an access point to the area of knitting. It contingently the increase of total corner of scope the filament of sending surfaces. On this basis, there is a question about optimization of form of priming line on the basis of minimization of pull before the area of knitting taking into account such real physical and mechanical properties of filament, as inflexibility on a bend, deformation in the area of contact. It is necessary to take into account the features of co-operation of filament with the structural elements of the system of serve of round knittings machines, such as a radial scope is in the area of contact, corners of scope in points an entrance and output. At the decision of this stumper, taking into account influence of many criteria, it is necessary it will be to develop the special algorithms and proper software for computer. Results are got. On the basis of analysis of flow diagrams of line of priming of filament of round knittings machines the theoretical ground of calculable chart of algorithm of successive optimization, which minimizes searches in the tree of variants, which enabled to execute calculable realization of algorithm of successive optimization which minimizes searches in the tree of variants, is first conducted. The developed algorithm allowed to decide the flat and spatial task of synthesis of the system of serve of filament on round knittings machines for the case of obstacles as verticals and circles, and software is developed for the search of optimum form of priming of filament on a round knitting machine. Practical value. The analysis of the system of serve of filament is conducted on the round knittings machines of DL – 4М, Mayer allowed to choose an optimum form and geometrical sizes of structural elements of the system of serve of filament and reduce the size of pull on 9 -18% and to decrease the precipice of filament on the average on 7 %.