Textiles: spinning – twisting – and twining – Apparatus and processes – Monitor and control
Patent
1984-07-30
1985-11-12
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Monitor and control
57 96, D01H 126, D01H 1332
Patent
active
045519692
ABSTRACT:
An apparatus for controlling the roving winding speed in a roving frame, in which a roving position detecting unit detects central positions of vibration of the roving in the vertical direction while suspended between a front roller of the drafting device and a flyer top by means of a plurality of photoelectric sensors. An average central vertical position of the vibrating roving is computed from the values measured by the roving position detecting unit, and a correction amount of the rotation speed of a bobbin is computed from the difference between the average central position and a desired value for controlling the roving winding speed and from a correction coefficient. A correction signal is generated corresponding to the correction amount, and the rotation speed of the bobbin is regulated based on the correction signal.
REFERENCES:
patent: 3892064 (1975-07-01), Araki et al.
patent: 4134253 (1979-01-01), Handa et al.
patent: 4254615 (1981-03-01), Adolf et al.
patent: 4375744 (1983-03-01), Briner et al.
patent: 4467592 (1984-08-01), Araki
patent: 4467593 (1984-08-01), Araki
Kishi Katsutoshi
Kogiso Takashi
Yokoyama Hachirou
Howa Kogyo Kabushiki Kaisha
Meller Michael N.
Petrakes John
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