G - Physics
02
B
G02B 6/44 (2006.01)
Patent
CA 2051934
The present invention relates to a cabling machine for laying optofibres, cables or the like in an oscillating, wavy path around a smooth pull-reliever or into grooves of oscillating, wavy shape extruded around a pull-reliever, so-called S/Z-cabling. The machine includes a pull-reliever reeling-off device, a braking capstan, a fibre reeling-off device or devices, an S/Z-bench for laying the fibre/fibres around the pull-reliever, a yarn spinner for fixating the fibre/fibres on the pull-reliever, and a wheel capstan and a taking-up device for forwardly pulling and taking-up the finished cable respectively, the S/Z-bench including a laying- on tube provided with a laying-on head, wherein the fibre/fibres pass over the laying-on tube and up to and through holes in the laying-on head, where they are laid on the pull-reliever and fixated with yarn taken from the yarn spinner located immediately downstream of the laying-on head. According to a first aspect of the invention, the S/Z-bench (6) includes an aligning mechanism (13) which grips around and guides the pull-reliever (2), and a motor (15) which imparts an oscillating, rotational movement to the aligning mechanism via a transmission (14). The laying-on tube (11) is fixed to or connected to the transmission (14) which imparts an oscillatory, rotational movement to the laying-on tube in a direction opposite to the aligning mechanism (13). A sensor (17) is connected to the transmission (14) and controls rotational movement of the motor (15) and therewith of the laying-on tube (11) and/or the aligning mechanism (13), wherein rotational movement of the laying-on tube is restricted so that the fibre/fi- bres (5) will only be wound onto the laying-on tube (11) to a small extent. According to another aspect of the invention, the pull- reliever reeling-off device (1) and the braking capstan (3) are rotatably mounted and the laying-on tube (11) is freely rotatable and guided by the action of laying the fibre/fibres (5) into the grooves in the pull-reliever (2). The laying-on tube (11) is connected to the transmission (14) and a sensor (17) is connected to the transmission and functions to detect rotation of the laying-on tube (11) caused by the oscillating waveshape of the grooves and causes the reeling-off device (1) and the braking capstan (3) to rotate to perform a correcting function and therewith counteract excessive rotation of the laying-on tube (11) so that the grooves in the pull-reliever (2) in the vicinity of the laying-on head will extend substantially rectilinearly and such that the fibre/fibres (5) extend substantially parallel with the laying-on tube.
Nicolaescu Sawyer
Telefonaktiebolaget Lm Ericsson
LandOfFree
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