Textiles: spinning – twisting – and twining – Apparatus and processes – Package handling
Patent
1990-07-05
1993-02-16
Stodola, Daniel P.
Textiles: spinning, twisting, and twining
Apparatus and processes
Package handling
57 90, 57266, 57276, 242 355A, D01H 910, D01H 900
Patent
active
051859939
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a spinning machine.
In a known ring spinning machine of this type (GB-PS 1,168,638) the bobbin pegs are mounted directly on the endless conveyor constructed as horizontal conveyor belt. The endless conveyor is generally constructed as a steel band or belt which distorts as little as possible so that the predetermined intervals of the bobbin pegs, which must coincide exactly with the intervals of the spinning points or stations, remain unchanged even on relatively long operation of the machine.
Whereas in the ring spinning machine according to GB-PS 1,168,638 the bobbin pegs are arranged at half the interval of the spinning stations or points in order to be able to receive during doffing temporarily simultaneously an empty bobbin and a full bobbin (cops) of the associated spinning point, it is also possible to provide on the endless conveyor constructed as a belt or band bobbin pegs only at the interval of the spinning points, in which case at each spinning point an additional peg must then be provided in order to receive temporarily one of the bobbins to be replaced on a bobbin change (U.S. Pat. No. 3,905,184).
It is further already known (EP-A-0 061 432) to provide on each machine side of a ring spinning machine or frame an endless conveyor, both runs of each endless conveyor being equipped with bobbin pegs so that when changing a full bobbin (cops) for an empty bobbin the full bobbin can be fitted onto the empty bobbin peg whilst thereafter an empty bobbin is removed from the bobbin peg of the other run associated with the same spinning point and fitted onto the spindle of the spinning point. In this known ring spinning machine as well the bobbin pegs are connected via angle pieces directly to the endless conveyor.
Problematical in the aforementioned ring spinning machines is firstly that the support pegs form a fixed part of the endless conveyor, which is necessary because the support pegs in the bobbin change position of the endless conveyor must be exactly aligned with the spinning point individually associated with them. For this reason, the full bobbins (cops) at the end of the last spinning point group must be removed from the support peg and then for example transferred to peg trays of a spooling frame. Conversely, the empty bobbins supplied for example from the spooling frame must be placed by means of special gripping and lifting means from the peg trays onto the support pegs at the start of the first spinning point group.
It is also already known (JP-OS 57-161 134) to use the peg trays employed in the spooling frame following the ring spinning machine also as empty bobbin supply means or full bobbin removal means by displacing said peg trays, which generally consist of a circular disc and a center peg arranged perpendicularly thereon, in a guide rail extending round the ring spinning machine, the diameter, in particular the length of a peg tray, being slightly smaller than the spacing of two adjacent spinning points. The individual peg trays are in contact with each other and are advanced by exerting a force on one or more peg trays, the thrust being at least partially transmitted by the direct contact of the peg trays. A conveying apparatus for such peg trays is also known from DE-OS 3,544,560.
A disadvantage in the ring spinning machine according to JP-OS 57-161 134 is that the bobbin pegs are not exactly in alignment with the spinning points when a group of peg trays with empty bobbins has been pushed on one machine side in front of the associated spinning points. Consequently, before the bobbin change can be performed in the known ring spinning machine a rake must be pushed at right-angles to the spinning machine longitudinal axis between the peg trays so that the intervals of the adjacent bobbin pegs are exactly coordinated with the intervals of the adjacent spinning stations.
In a similar bobbin transport means (DE-OS 3,712,027) a reciprocating rail or the like extending along the spinning points is used and cooperates with peg trays displaceable in a guide rail i
REFERENCES:
patent: 3382659 (1968-05-01), Schulz et al.
patent: 3788054 (1974-01-01), Haussmann et al.
patent: 3905184 (1975-09-01), Takai et al.
patent: 4432198 (1984-02-01), D'Agnolo
patent: 4548029 (1985-10-01), Araki et al.
patent: 4813222 (1989-03-01), Fukuda et al.
patent: 4841720 (1989-06-01), Kawasaki et al.
patent: 4875572 (1989-10-01), Kiriake
patent: 4964269 (1990-10-01), Dinkelman
patent: 5056726 (1991-10-01), Wirtz et al.
Patent abstracts of Japan vol. 4 Nos. 3 (C-143) [1148], Jan. 1983.
Erni Markus
Fritschi Isidor
Keller Urs
Meyer Urs
Wernli Jurg
Hand Francis C.
Rieter Machine Works Ltd.
Stodola Daniel P.
Stryjewski William
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