Patent GB-1236214-A (GB)
Title: Method and apparatus for preparing carded slivers for spinning
IPC: B65H67/04
Filed: 1968-09-26
Abstract: 1,236,214. Spinning yarns; coiling sliver into cans. ZINSERTEXTILMASCHINEN G.m.b.H. 26 Sept., 1968 [27 Sept., 1967], No. 45689/68. Heading D1F. A method of preparing carded sliver for spinning comprises feeding the slivers in separate lengths in the longitudinal direction in which they were carded through first ends of and into cans until these are filled (the leading ends of the slivers being located at the other ends of the cans whilst the cans are being filled) transporting the filled cans to a drawing frame to which the leading ends of the slivers (from the other ends of the cans) are supplied in the same direction, and doubling and drawing the sliver in the stated longitudinal direction. As shown schematically in Fig. 1, slivers delivered by carding machines 1, 2, 3, 4, are fed into the open top ends of cans 9 in the position 9' by conventional coilers 1'. When a can is filled it is moved to position 9"' whence the cans are pushed along transporting surface 8 to apparatus 5 which inverts each can so that the leading end of sliver therein is at the top of the repositioned can. The latter slides along surface 8 to position 9b and then 9a when all preceding empty cans have been removed. Leading ends of sliver are taken from cans at 9a and inserted into drawing frame 6 wherein doubled slivers are drafted and coiled into cans (not shown): these cans are transported to a roving frame 6' which yields drawn and doubled rovings spools of which are transported to and supply ring spinning machines 6" which deliver spun yarns. In the operation of apparatus 5, Fig. 2 incorporating automatically controlled hydraulic and electric motors, a filled can 9 is pushed into the position shown whereat a cover 33' screwed to the lower end abuts stationary stops 35 and rests on surface 35' and gripper arms (25) 26 are spread open. Hydraulic piston and motor 24 is operated to cause arms (25) 26, to grip the can while a flexible pneumatic tube 34 filled with compressed air holds the cover 33 in the position shown. Gripper 32 then moves downwards with carriage 28 while being rotated by motor 30 so that cover 33 becomes tightly screwed on the upper end of can 9 whereupon pressure in tube 34 is relieved to enable gripper 32 to be moved to inoperative position. Carrier 23 with arms (25) 26, and filled can are now raised until bottom surface of cover 33' clears the stops 35 thus permitting turning of the can by arms 25, 26, about the axis of shaft 22 through 180‹ so that the positions of covers 33, 33', are reversed whereupon carrier 23 is lowered until cover 33 rests on surface 35. Gripper 32 is lowered, grips cover 33', unscrews it from can and is then raised, to enable horizontal movement of can, whereupon arms (25), 26 are opened to free the can and/or move these arms to inoperative position. In the operation of a modified apparatus whereby cans are filled from feeding means of carding machines arranged below the cans, Fig. 5, sliver is fed into the lower end of and fills can 44 whereupon loading disc 46 becomes attached to holding means 50 by hooks 53 so that can may be pushed from the annular supporting surface surrounding coiler 43 onto transporting surface 57 and down a ramp 41 towards the drawing frame (6) which is fed with leading ends of sliver from the top of the cans. The cans may be transported on wheeled carriages for which guide rails may be provided, Figs. 6 and 7 (not shown) or the can may be modified to run on wheels or rollers projecting slightly below the lower end of the can and carried on legs, which may turn about vertical axes to ensure that the wheels correctly align for travel in the required direction Fig. 4 (not shown) and/or may be resiliently mounted as by spring- loaded pistons, Fig. 8 (not shown).