Textiles: spinning – twisting – and twining – Apparatus and processes – Doffing or donning
Patent
1978-02-17
1979-03-27
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Doffing or donning
57275, D01H 910
Patent
active
041458680
ABSTRACT:
A mobile type auto-doffer for ring spinning machines and the like consists of a doffing device and a donning device with mechanisms similar to those of a doffing device. The operation for doffing full bobbins may be carried out by utilizing the doffing device, and the operation for donning fresh bobbins may be carried out by utilizing the donning device. During the doffing operation, a plurality of full bobbins is simultaneously transported from the spindles to the pegs disposed between the spindle rail of the spinning machine and the surface of the floor of a spinning plant. During the donning operation, the same number of fresh bobbins as that of a full bobbins is simultaneously transported from the pegs to the spindles. Both of the above-mentioned ways of transporting bobbins may be carried out by moving the full bobbins or the fresh bobbins along separate vertical passages, respectively, i.e., one passage being disposed farther from the row of spindles than the other passage. The vertical movement of bobbins can be induced by the sliding movement of swing arms along a corresponding spline shaft. The horizontal movement of the doffing head of the doffing device as well as the horizontal movement of the donning head of the donning device can be induced by the swinging movement of the swing arms. The horizontal and vertical movements of the doffing head of the doffing device and the horizontal and vertical movements of the donning head of the donning devices can be controlled and effected by means of hydraulic mechanisms, respectively. In addition, the action of holding full or fresh bobbins by means of a plurality of cop holders mounted on both the doffing and donning heads, can also be controlled and effected by means of hydraulic mechanisms.
REFERENCES:
patent: 3307340 (1967-03-01), Nishii et al.
patent: 3344594 (1967-10-01), Takemura et al.
patent: 3398519 (1968-08-01), Haussmann
Morita Shin-ichi
Tanaka Yutaka
Howa Kogyo Kabushiki Kaisha
Petrakes John
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