A method for managing and controlling the feeding of a thread or yarn or a plurality of threads with constant tension and/or speed to a textile machine, a circular knitting machine, a stocking machine, loom or a machine for preparing the yarn,
- said feeding being obtained according to different operating steps or operating areas of such machine which are carried out during the production of a product or processing of the thread, such processing or production comprising a succession of said operating steps or operating areas defining a complete production cycle,
- each thread being fed to said machine by a corresponding feeder device with constant tension and/or speed and/or controlled by a sensor device which monitors the feeding or at least one inherent characteristic selected from thread tension, thread speed, thread diameter, thread quantity, and thread color,
- the detection of said single operating step of the production cycle or operating area of the operating machine or the process progress status of the product being detected through a synchronization signal generated by the textile machine, wherein:
- every single operating step or operating area is suitable to allow a product macro-area to be produced or to allow a single complete treatment of a plurality of treatments the thread should be subjected to be carried out, in addition there being provided:
- the link of particular and set values of said at least one characteristic of the thread fed and/or controlled by every feeder device to each of such operating steps or operating areas adapted to produce each macro-area of the product or for implementing each complete treatment of the thread, said characteristic being selected from the thread tension, the thread speed, the thread diameter, the fed thread quantity and the thread color, said set values being recorded in a table;
- the memorization of such values in setting and control means to which such feeder device and/or sensor is connected;
- and
- the intervention of said setting and control means on the feeder device and/or sensor to define the values of the fed and/or controlled thread according to the memorized values for obtaining said product macro-area or for implementing the single complete treatment of the thread, said single operating step or operating area being identified through the generation of a unique synchronization signal by the machine at the start or at the end of the production of a product macro-area or the single treatment of the yarn, said unique signal being used by said setting and control means for acting on each feeder device and/or sensor to allow said feeder and/or sensor to control and/or feed the thread, said control and/or feed being carried out with the characteristics suitable to implement said single operating step or operating area to obtain said product macro-area or carry out said single treatment of the yarn
- said setting and control means uniquely identifying said operating step or operating area according to the synchronization signal received from the machine, the implementation of said operating step or operating area to obtain the single treatment of the yarn or a product macro area being carried out according to the above particular and set values of said at least one characteristic of the thread fed and/or controlled by each feeder device and/or sensor for each of such operating steps or operating areas.