Method For Monitoring a Yarn Transforming Process
AssigneeRitm
InventorsChristophe Vega, Florent Beauducel
Life of this patent
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Abstract
At least one yarn is unspooled from at least one bobbin using a spindle cap. The unspooling speed and, in a coordinated manner, other parameters associated with the transformation process, are adjusted according to a quantity representative of the amount of yarn remaining wound on the at least one bobbin, so that the unspooling speed remains below limits imposed by unspooling conditions.
Claims16
Method for monitoring a yarn transforming process in which at least one yarn is unspooled from at least one feed bobbin using a spindle cap mounted rotating freely while being driven by said at least one yarn, in which variation in quantity of yarn remaining wound on the at least one feed bobbin or a diameter of said at least one feed bobbin gives rise to unspooling conditions which affect equality or performance of the transforming process, wherein unspooling speed and, in a coordinated manner, other parameters associated with the transforming process, are adjusted according to a quantity representative of an amount of yarn remaining wound on the at least one bobbin, so that the unspooling speed remains below limits imposed by the unspooling conditions.
Method for monitoring a transformation process by single twist, double twist or stranding of yarns in which at least one yarn is unspooled from at least one feed bobbin and using at least one spindle,
- wherein speed of rotation of the spindle and speed of traction of the yarn are controlled by one or more motorizations independent of adjacent positions, by adjusting the speed of rotation of the spindle and speeds of yarn delivery members as a function of a quantity representative of an amount of yarn remaining on the feed bobbin in a variable ratio, thereby conferring on the yarn a variable twist per meter, and of a law of variation as a function of the quantity representative of the amount of yarn remaining on the feed bobbing, in order to compensate for variations in twist per metre caused by unspooling or respooling operations of twisting process or upstream or downstream transformation processes.
Dependencies are inferred from the claim text.