GB1312185A - Turret mounted flying splice unwind - Google Patents

Abstract

1312185 Feeding webs BELOIT CORP 19 April 1971 [2 March 1970] 21884/71 Heading B8R Reel stand.-A turret 15 comprising a pair of laterally spaced beams 16 is indexable about a central shaft 14 and is provided with mountings for two web rolls 20, one being a working roll and the other a standby roll. Unwinding.-Respective endless flexible tapes 23 are mounted in arms 36 pivotable about shafts 33 so that the tapes can be brought into engagement with the peripheral surface of a roll to unwind the roll either in position A or position B shown in Fig. 1. The tapes have a common drive so that they are driven at the same speed. Splicing.-A pivotable arm 53 provided with a splicing roller 51 and a cutter 73 is movable to effect a splice between an expiring roll in position B and a new roll in position A. Operation.-The turret is first operated to pick up a full roll 20 which is then positioned at A where it is engaged by the tape 23 to unwind the web which passes over the splicing roller 51 and guide rollers 55, 56 to the web run. When the roll at A has reached a desired diameter the turret is pivoted first anti-clockwise to pick up a replacement roll and then clockwise to position the new roll at position A and the expiring roll at position B where it continues to be unwound by its associated tape 23. The new roll is prepared with a reflective tape 85 and with a splicing tape, and is then engaged by the respective tape 23 so that it is brought up to the speed of the running web. The splicing roller and cutter are then actuated, under the control of a photo-electric eye (not shown), co-operating with the reflective tape 85, to effect an automatic splicing operation.