Process and apparatus for controlling distribution of thread on

Details Process and apparatus for controlling distribution of thread on Process and apparatus for controlling distribution of thread on

1989-12-22

1991-10-15

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

B65H 5438

Patent

active

050567241

ABSTRACT:
The present invention relates to a process for piloting the distribution of thread on a package under formation, in a collection unit for collecting synthetic threads, to prevent ribboning from forming during the continuous overlapping of different winding layers. The present invention further relates to an apparatus to implement the above process. The process comprises setting, instant by instant, values of operational parameters during the thread winding in such a way that the collection unit operates along descending portions of lines. Each line is defined by a constant and non-integer "winding ratio" "K". The line portions are contained inside a range bounded by a maximum threshold value and a minimum threshold value of the winding angle. The maximum and minimum threshold values are symmetrical to the optimum value. The process further relates to piloting a traverse cam to fix any dislocation of the descending line portions at a distance higher than, or at least equal to, a prefixed reference value.

REFERENCES:
patent: 4504021 (1985-03-01), Schippers et al.
patent: 4504024 (1985-03-01), Gerhartz
patent: 4515320 (1985-05-01), Slavik et al.
patent: 4667889 (1987-05-01), Gerhartz
patent: 4676441 (1987-06-01), Maag
patent: 4697753 (1987-10-01), Schippers et al.
patent: 4771961 (1988-09-01), Sugioka
patent: 4779813 (1988-10-01), Sugioka et al.

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