Method and device of dynamically configuring linear density and blending ratio of yarn by two-ingredient asynchronous/synchronous drafted
US10316435B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2015 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | May 16, 2036 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02G3/346
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention discloses a method of dynamically configuring linear density and blending ratio of yarn by two-ingredient asynchronous/synchronous drafted, comprising: a drafting and twisting system, which includes a first stage drafting unit, a successive second stage drafting unit and an integrating and twisting unit. The first stage drafting unit includes a combination of back rollers and a middle roller. The second stage drafting unit includes a front roller and the middle roller. Blending proportion and linear densities of the two ingredients are dynamically adjusted by the first stage asynchronous drafting mechanism, and reference linear density is adjusted by the second stage synchronous drafting mechanism. The invention can not only accurately control linear density change, but also accurately control color change of the yarn. Further, the rotation rate of the middle roller is constant, ensuring a reproducibility of the patterns and colors of the yarn with a changing linear density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.