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Drafting unit for a ring spinning device with two delivery rollers defining a delivery nip therebetween for a roving
Drafting unit for a ring spinning device with two delivery rollers defining a delivery nip therebetween for a roving
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机译:用于环锭纺纱设备的牵伸单元,具有两个输送罗拉,在两个输送罗拉之间限定了一个输送口,用于粗纱
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摘要
A drafting unit for a ring spinning device is described for use on a ring spinning device, comprising two delivery rollers (1, 2) defining between them a delivery nip (3) for at least one drawframe- treated roving (4), one of them forming a deflection length (5) with a slot-shaped suction zone (6) for the roving (4) exiting the exit nip (3), which extends between the delivery nip (3) and a pressure roller (7) arranged downstream in the sense of deflection, and having an air nozzle (8) offset sidewards with respect to the suction zone (6) for a blast of air directed towards the delivery roller (1) with a flow component transverse to the suction zone (6) which extends in an arc-shaped path between its feed end and its discharge end with the air nozzle (9) on the inside of the arc. To smoothly process long-staple fibres it is suggested that an additional air nozzle (9) associated with the pressure roller (7), which has a flow component transverse to the suction zone (6), be provided on the inside of the arc of the suction zone (6).
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