Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1995-01-12
1997-08-05
Mansen, Michael
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 18PW, 24211832, B65H 67044, B65H 7510
Patent
active
056533950
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a method for taking up a yarn on a bobbin formed of any kind of material, with an appropriate initial Winding, bunch winding and tail winding, a winder used therefor, a bobbin used therefor and a yarn package obtained by the method.
DESCRIPTION OF THE RELATED ART
In general, synthetic fiber yarns spun from a spinning machine are taken up by a turret type winder such as disclosed in Japanese Unexamined Patent Publication (Kokai) No. 62-280172.
The abovesaid turret type winder rotatably carries a plurality, of spindles, and comprises a turret member rotatably secured on a machine frame, a traverse mechanism provided above the spindle, a contact roller for applying a predetermined pressure in a contacting manner to a bobbin fixedly carried on the spindle or a yarn layer section wound on the bobbin, an upper yarn-switching mechanism provided above the traverse mechanism or the contact roller, a lower yarn-switching mechanism provided between a full bobbin and an empty bobbin, for restricting a yarn path when switching the yarn from the full bobbin to the empty bobbin, a threading mechanism provided beneath the lower yarn-switching mechanism, for restricting a yarn path when the yarn is wound on the empty bobbin, and an initial-winding forming mechanism movable between the empty bobbin and the lower yarn-switching mechanism or between the empty bobbin and the threading mechanism, for forming the initial winding on the empty bobbin.
When a yarn is taken up by the abovesaid turret type winder, a bobbin 75 made of paper is used, having a yarn-catching groove 75A at one end thereof, consisting of a yarn introduction part 75a having a V-shaped cross section and a yarn-catching part 75b having a thinner cross section, as shown in FIGS. 44 and 45.
In order to prevent the yarn caught by the yarn-catching groove from escaping, the opposite side walls of the yarn-catching part 75b are brought into tight contact with each other by collapsing the outer periphery of the bobbin 75, as shown in FIG. 46.
When initiating the yarn take-up operation while using such a bobbin 75, a plurality of yarns spun from a spinning machine (not shown) are sucked into a suction gun (not shown), each of which is inserted to a first yarn path restricting guide of the threading mechanism, after a yarn-removing guide of the upper yarn-switching mechanism has come out to move the first yarn path restricting guide to a position at which the initial-yarn winding operation is conducted- Then a yarn-pushing guide of the first yarn-switching mechanism moves toward one end of an empty bobbin to convey the respective yarn thereby onto a vertical line passing a position of the respective bobbin at which a bunch winding is to be formed.
Next, when a yarn-winding guide of the initial-winding forming mechanism moves to a yarn-running position to bring the yarn which is moving while being guided by the yarn-pushing guide and the first yarn path restricting guide of the threading mechanism, into contact with the empty bobbin, the yarn engages with the yarn-catching groove of the empty bobbin and is caught thereby, due to the movement of the yarn-winding guide in the lengthwise direction of the empty bobbin. Then, the yarn-running direction is abruptly reversed, whereby the yarn is broken by a tensile force applied thereto due to the suction of the suction gun (not shown) and the drag of the empty bobbin and a fresh yarn continuously delivered from the contact roller is wound in the yarn-catching groove of the empty bobbin. Since the yarn is guided by the yarn-pushing guide to run toward a position at which a bunch-winding is to be formed, the yarn is wound at this predetermined position as a bunch-winding while moving along the outer periphery of the empty bobbin.
When a yarn is switched from a full bobbin to a fresh empty bobbin after a predetermined amount of yarn has been taken up on the bobbin 75, the turret member rotates to move the full bobbin from a yarn-winding position to a doffing position
REFERENCES:
patent: 2006797 (1935-07-01), Dunlap
patent: 2381869 (1945-08-01), Amrhein et al.
patent: 3451639 (1969-06-01), Atwood et al.
patent: 3488010 (1970-01-01), Parry
patent: 3628747 (1971-12-01), Bakewell
patent: 3794260 (1974-02-01), Sowell
patent: 3880371 (1975-04-01), Landenberger et al.
patent: 4018401 (1977-04-01), Cunningham
patent: 4081149 (1978-03-01), Miller
patent: 4103834 (1978-08-01), Banning
patent: 4477032 (1984-10-01), Pfyffer et al.
patent: 4561600 (1985-12-01), Greive et al.
patent: 4646981 (1987-03-01), Ohayon
patent: 4792104 (1988-12-01), Tate
patent: 5029762 (1991-07-01), Behrens et al.
patent: 5170961 (1992-12-01), Bolz et al.
patent: 5248103 (1993-09-01), Polnik
Iwade Takashi
Migaki Yoshiro
Takagi Jun
Mansen Michael
Toray Engineering Co., Ltd.
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