The invention relates to a double-shafting
fiber interactive equal feeding composite
spinning device, technology and application. The device comprises an equal feeding mechanism, a conversion mechanism, and a
fiber strand shifting mechanism. The technology for the composite
spinning is that endless tows or yarns are a shafting, circumambulate through an upper guide wire and obtain the equal feeding or a trace amount of the equal feeding through a holding roller pair, after that, the endless tows or yarns are randomly or periodically conversed around or move slowly to feed at a jaw of a former top roller through a lower guide wire controlled by a conversion cylinder, and after leaving the jaw of the former top roller, the endless tows or yarns and short
fiber strands are gathered to form a double-shafting conversion equal feeding wrapping and core-spun composite
spinning under the twisting action, wherein the short fiber strands of another shafting can move around per se. The method is unique and can be implemented easily; and the corresponding device is concise and convenient to install, which can be used for a synchronous conversion equal feeding wrapping and core-spun composite spinning of double-shafting fiber of a ring throstle.