Unwinding station for fiber webs including a device for performi

Details Unwinding station for fiber webs including a device for performi Unwinding station for fiber webs including a device for performi

1997-07-14

1998-08-25

Nguyen, John Q.

Winding, tensioning, or guiding

Unwinding

With attachment to preceding material

2425554, 2425553, B65H 2100

Patent

active

057975612

ABSTRACT:
An unwinding station for fiber webs, particularly paper webs, features a support each for a new web roll (primary paper roll 16) and for a previous web roll (secondary paper roll) as well as a system for splicing the web leader of the primary paper roll on the fly to the web end of the secondary paper roll. This system allows the so-called flying splice. A drive unit (M) operating selectively as a motor or brake is coupled to the primary paper roll (16). An RPM control (24) or a web draw control (25) is coupled selectively to a control (20) of the drive unit (M) using a switching system (34). An additional drive (M') operating exclusively as a motor is coupled to the primary paper roll (16), and at that, during the period of time between the activation of the drive unit (M) and splicing the web on the fly, independent of the drive unit (M).

REFERENCES:
patent: 3918655 (1975-11-01), Hillner et al.
patent: 4077580 (1978-03-01), Lang et al.
patent: 4934621 (1990-06-01), Jacobs
Voith Publication No. P2827.

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