WINDING APPARATUS FOR HELICAL WINDING OF A STRIP FORMING THE REVOLVING SURFACE OF A WINDING MANDREL AT A PITCH CORRESPONDING TO THE STRIP WIDTH

摘要

1,222,748. Winding mandrels. P. U. POULSEN. 12 May, 1969 [14 May, 1968], No. 24178/69. Heading F2P. An apparatus for the helical winding of a strip material, e.g. an endless steel tape 10, at a pitch corresponding to the strip width, to form the revolving surface of a winding mandrel, comprises a plurality of strip support members, e.g. endless ball belt holders 5, only one shown, which are distributed around an axis, extend parallel thereto, are spaced equally therefrom, and arc adapted to rotate about the axis, a stationary guide ring 14 mounted concentrically with the strip convolutions, and a plurality of slides 8 arranged in the region where the strip is first wound on to the support members 5. The slides 8 are reciprocable in the longitudinal direction on the respective support holders 5 and disposed radially inwardly of the strip convolutions, each slide 8 having a rigidly mounted, radially outwardly extending, thrust member 9 for engagement with the rear edge of the first strip convolution, a follower roller 13 co-operating with the stationary guide ring 14 which has a general pitch corresponding to that of the strip convolutions. A spring 11 urges each slide towards the guide ring. Each support holder 5 is connected by an arm 3 to a mandrel core 1 which is rotatable about its axis by drive means, not shown, so that the slides 8 reciprocate along guides 7 in accordance with the cam profile on the ring 14 and with an initial displacement over section M slightly greater than the width of the strip 10 which is wound continuously and helically, over the support members 5, with its edges in abutment, the rear edge of the first convolution engaging the thrust members 9 which ensure the correct pitch of winding for the strip to provide a smooth outer mandrel wall. The endless steel tape 10 is carried by means of reversing rollers, not shown, through the mandrel back to the region opposite the slides 8.