Textiles: fiber preparation – Working – Combing
Patent
1989-09-13
1991-04-09
Schroeder, Werner H.
Textiles: fiber preparation
Working
Combing
19235, 19239, D01G 1908
Patent
active
050052624
ABSTRACT:
The comber has at least one combing head comprising an oscillating nipper unit with an intermittently rotatable feed roller for advancing the lap feed to be combed in the combing head. An electric motor is provided to rotate the fed roller and is energized with drive pulses by a control unit. The magnitudes and phases of the drive pulses are adjustable in the control unit relative to the movements of the nipper unit. Consequently, the angle through which the feed roller rotates during a single reciprocation of the nipper unit and the instant of time of such rotation can be readily adjusted steplessly even with the comber runner. Also, a closed-loop control is possible if the angle through which the feed roller rotates is so adjusted in the control unit by a controller that the yarn count, as determined continuously by a sensor of the combed sliver deliver by the combing head always remains substantially constant.
REFERENCES:
patent: 3004300 (1961-10-01), Naegeli et al.
patent: 3153936 (1964-10-01), Nydam
patent: 3277790 (1966-10-01), Walters
patent: 4079632 (1978-03-01), Mori et al.
patent: 4266324 (1981-05-01), Hasegawa et al.
patent: 4302968 (1981-12-01), Moser
patent: 4672717 (1987-06-01), Shimomura
Calvert John J.
Rieter Machine Works Ltd.
Schroeder Werner H.
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