Patent GB-953365-A (GB)
Title: Improvements in winding machines
Inventor: HARDWICK JOHN GORDON
IPC: B65H54/28
Filed: 1961-03-15
Abstract: 953,365. Covering cores by winding. IMPERIAL CHEMICAL INDUSTRIES Ltd. Feb. 23, 1962 [March 15, 1961) No. 9572/61. Heading B8G. The invention provides a machine for winding a band of filaments on to a rotating mandrel having domed ends and it includes a traversing filament guide 44, Figs. 10 and 11, around which the band of filaments 61 passes before being laid on the mandrel, the machine being such that when the guide 44 reaches a domed end it follows the contour of that end and then performs a pivotal movement such that it is suitably oriented for laying the bands of filaments 61 on the mandrel during the return stroke. The traversing carriage, Fig. 2, comprises a rigid framework 10 on which are mounted two parallelogram linkages. The first parallelogram is the linkage 12, 13, 14, 15 and the arms 12, 13 of this linkage are pivotally mounted at their centres on the framework 10. Slidably mounted on tubes 19 carried by the first parallelogram is a second parallelogram comprising the slide blocks 20, 21 and the links 22, 23. It is the second parallelogram that carries the filament guide 44, said guide 44 being rigid with a shaft 43 pivoted in a tee-piece 25 pivoted on the links 22, 23. When the framework 10 moves from right to left, as viewed in Fig. 2, Bowden cables 37 to 40 are operated to slide the second parallelogram 20 to 23 to the left hand end of the first parallelogram 12 to 15. As the framework 10 reaches the domes left hand end of the mandrel a left hand leading stirrup 30 is actuated to cause the first parallelogram 12 to 15 to fold up in the manner shown in Fig. 3 (Fig. 3 should be rotated anticlockwise by 90 degrees for comparison with Fig. 2). As the second parallelogram 20 to 23 is at the left hand end of the folded parallelogram this folding action causes the guide 44 to move away from the frame 10 in a manner following the contour of the domed end. When the framework 10 moves from left to right, again as viewed in Fig. 2, the Bowden cables 37 to 40 are operated to slide the second parallelogram 20 to 23 to the right hand end of the first parallelogram 12 to 15. As the framework 10 reaches the domed right hand end of the mandrel the right hand and leading stirrup 30 is actuated to cause the first parallelogram 12 to 15 to fold up such that it is now the link 14 that is disposed forwardly of, and the link 15 that is disposed rearwardly of, the frame 10. As the second parallelogram 20 to 23 is now at the right hand end of the folded parallelogram this folding action causes the guide 44 to move away from the frame 10 in a manner following the contour of the right hand domed end. When the framework 10 reaches the left or right hand point in its traverse at which a leading stirrup 30 is actuated to fold up the first parallelogram, a triangular driving plate 26 is also displaced to vary its angular relationship with the second parallelogram, as may be seen by comparing Figs. 2 and 3. This change in angular relationship is used to operate a Bowden cable 55 that turns the shaft 43 and hence the guide 44 to an appropriately inclined setting to deposit a trailing layer of filaments on the mandrel.