Winding – tensioning – or guiding – Reeling device – With particular guide or guard
Patent
1992-11-23
1994-11-15
Stodola, Daniel P.
Winding, tensioning, or guiding
Reeling device
With particular guide or guard
242158R, 2423991, B65H 7534
Patent
active
053640438
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to an arrangement in a coil winding machine for winding a strandlike product, such as a cable, on a reel provided with flanges, which coil winding machine comprises
a support stand for supporting a reel rotatably around the axis thereof,
a guide for supplying the strandlike product to be wound to the reel in order to form superimposed layers of product turns wound adjacent to each other between the flanges of the reel,
a distribution machinery for displacing the support stand and the guide in relation to each other by a pitch corresponding to the thickness of the product per product turn,
detectors for detecting the reel flanges and for acting on the distribution machinery so that displacement direction between the reel and the guide is reversed, as a coil product turn contacts a reel flange, and measuring means for continuously detecting the thickness of the coil product which measuring means are connected to control the distribution machinery so that the pitch of the product turns on the reel is varied in accordance with the thickness measurement of the measuring means.
The expression "strandlike product" is in this connection intended to include all kinds of narrow endless objects, such as cables, wires, hoses and the like, which can be wound on a reel, mainly products found in the manufacture of electric cables and information transmission wires. In the following the invention will, however, for the sake of simplicity, be described in connection with a cable.
When a cable is wound on a reel or a drum, a guiding means is used to guide the cable to be situated between the flanges of the reel in layers positioned on top of each other, each layer consisting of a number of adjacent cable turns.
In most known coil winding machines, eg U.S. Pat. Nos. 4,143,834 (FURUKAWA), 4,150,801 (KOBE STEEL) and 3,997,128 (FURUKAWA), the winding movements are carried out by an axial displacement of a cable guide and the reel in relation to each other in the axial direction of the reel so that when the reel has rotated one turn, the guide or the reel has moved over a distance corresponding to the thickness of the cable. Known coil winding machines are normally adjustable for handling of reels having different drum diameters and different distances between the flanges. The machines are also provided with a distribution machinery, by which the axial displacement between the guide and the reel per each coil turn, ie the pitch by which the cable is wound on the reel, can be adjusted in each case to correspond with the thickness of the cable to be wound.
A considerable drawback of these known coil winding machines is that the machine operator, when initiating the winding, has to manually adjust the distribution machinery so that the pitch of the cable corresponds to the cable thickness in question. After this the cable is wound by the guide on the reel by a constant pitch from flange to flange. If the thickness of the cable, eg due to an incorrect measurement, does not exactly correspond to the adjusted pitch, or if the cable thickness varies over certain cable lengths from the measured value so that undesired spaces are formed between the cable turns, this may substantially disturb the winding process and impair the winding result.
A further disadvantage is that the machine operator, when initiating the winding, has to manually adjust the turning points for the reversal of the distribution machinery at the reel flanges so that the turning positions correspond to the width or flange thickness of the reel in question. The adjusting of the turning points is usually effected by the operator by moving mechanical limit switches or similar detectors of another type. Besides this being time-consuming, the adjusting often turns out wrong even if the displacement is carried out to a corresponding marking on a graded scale. This is due to the fact that the width and the flange thickness of the reels are not always constant among reels of the same size and type. In particular woode
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Dunn Eileen A.
Nokia-Maillefer Oy
Stodola Daniel P.
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