Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1975-11-10
1976-09-28
Petrakes, John
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 18DD, 242 431, B65H 5438
Patent
active
039827062
ABSTRACT:
In a winding machine having independent spindles with a grooved yarn-guide driving bobbins preventing winding irregularities, winding bobbins at high speeds from conventional or sectional hanks, cops, cakes or the like, namely winding machines having a conical bobbin which rests on a cylindrical yarn-guide having helical grooves generally with two opposing pitches which distributes the yarn uniformly on the bobbin, the latter resting under its own weight above the yarn-guide which drives the bobbin by frictional resistance, the axis of the bobbin moving progressively away from that of the yarn-guide as the yarn is being wound while forming normally in a plane common to the two axes a small or zero angle with the axis of the cylindrical yarn-guide, including a device for preventing the yarn from collecting at certain preferential points of the bobbin at certain winding speeds, and including a yarn break detector, the improvement comprising a device for oscillating at least one of the ends of the shaft of the yarn-guide and of the bobbin with an alternating relative oscillatory movement substantially perpendicular to a plane defined by the axes of the bobbin and of the yarn-guide, when they are in this plane, without causing any substantial vertical oscillation of the bobbin. A modulated action device accompanies the oscillation of the yarn-guide or of the bobbin for retaining the yarn in a groove of the yarn-guide for any operative position of the axis of the yarn-guide with respect to the axis of the bobbin. The modulated action device is combined with a device for preventing a faulty movement of the yarn with respect to the axis of the bobbin both at a time of starting and at a time of braking, comprising a torque converter for providing a uniform and moderate torque on the yarn-guide at the time of starting, an automatic braking device for intensive simultaneous stopping of the control motor, of the bobbin, and of the yarn-guide and the members which actuate it as soon as an exaggerated traction is exerted by the yarn which is supplied, the automatic braking device braking the bobbin abruptly and with priority, and a device for tensioning the feed yarn for preventing slipping thereof.
REFERENCES:
patent: 1899651 (1933-02-01), Swanson
patent: 1915241 (1933-06-01), Reece
patent: 1946506 (1934-02-01), Swanson et al.
patent: 1955778 (1934-04-01), Swanson
patent: 2087439 (1937-07-01), McKean
patent: 3884426 (1975-05-01), Hermanns
patent: 3948453 (1976-04-01), Abbott
Farber Martin A.
Petrakes John
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