GB513364A - Improvements in and relating to cop winding machines - Google Patents

Abstract

513,364. Cop-winding machines. MACKIE & SONS, Ltd., J., and MACKIE, J. P. Feb. 7, 1938, Nos. 3834 and 34924. [Class 120 (ii)] In cop-winding machines for yarn of bast fibres such as flax, hemp and jute and "hard" fibres such as sisal and manilla means are provided for stripping the finished cop from the winding- spindle while the spindle is rotating, and for severing the yarn and restarting the winding as a continuous operation. As shown in Fig. 2, a winding-spindle 1 is continuously driven and the traverse guide continuously operated from worm gearing 2, and the yarn is wound between two pairs of forming cones 10, 11 and a buttress 12. The cones 10 are carried by a frame 14 which is automatically raised when the cop is fully wound so that the cones strip the cop from the spindle, the frame carrying the buttress being tilted to permit the removal and the yarn being automatically severed. The controlling-means comprises a rocking lever 16 and a bar 20, which is engaged by a stop 23 on the buttress carrier 13 when the cop is fully wound and tilted so that it is engaged by the tail 24 of the lever 16 and moved into the position shown in Fig. 3, the buttress-frame being tilted by the engagement of a stop 28 with the stop 23 and retained on a shelf 213. A spring-controlled stop 32 on the bar 20 engages a lever 34 on the frame 14 so that a lever 35 is brought within range of the lever 16 and the frame thereby raised and the cop stripped from the spindle and carried within a tube 38, which is pivotally mounted at 39 on the frame of the machine and is engaged by a stop 37 on the frame 14 and tilted so that the cop is released from the rollers 10 and falls on to an incline 49 and is delivered to a conveyor or the like. The yarn is continuously wound on the spindle during the doffing-operations, a knife 15 is actuated by a cam on the frame 14 to sever the yarn against a reduced part 1a of the spindle before the cop is swung aside. At the next movement of the lever 16 the stop 18 engages the bar and releases it from the catch 26 so that it is withdrawn by a spring 25, the buttressframe being removed from the shelf 213 by a spring 29, and the frame 14 lowered to bring the cones into position. A switch track is provided whereby the frame 14 when lowered, clears the buttress 12. The manner of severing during the beginning of a new winding provides an end 42 which is not wound in the cop, the buttress being provided with substantial clearance so that it is not disturbed, and serves as a weaver's end. As shown in' Fig. 4, the spindle is overhead driven and the yarn laid by a reciprocating guide 7, the buttress 12 being pushed downwardly by the cop against the action of a weight 6i. Only one pair of forming-rollers 10 is used, and the buttress-carrier is arranged to engage a pin 65 on a bar 20 when the cop is fully wound and to tilt it so that it is engaged and moved longitudinally by a lever 69 oscillated by a lever 16. The sequence of operations is similar to that previously described, the buttress-frame 13, which slides on a rod 60, being withdrawn from the normal winding-position as the rod 60 is turned about its pivot 74 by the movement of the bar 20, and is maintained in its retracted position by a shelf 67. The roller-carrier 14 forced downwards to strip the cop by the engagement of an arm 80 of the lever 16 with a lever 77, which is mounted on the carrier and is normally withheld therefrom by a pin on the rod 60, and, during the downward movement, the pivot pin 83 of the lever 77 strikes the tail of the knife lever 81 and swings the knife forward to sever the yarn. The lever 16 and the arm 80 are coupled by a shear pin to prevent damage from obstruction. As shown in Fig. 7, the forming-cones 10 are adapted to be pressed downwardly by the cop and are carried by a frame 14 which also carries the traverse cam. As in the constructions previously described, an oscillating lever 16 is the main operative member which, when an arm 20 is raised by the carrier 14 to within the range of the arm 24, operates the arm 20 which slides the support of carrier 14 horizontally to remove the cones and at the same time releases a lever 100 so that latch-means 107 on a slidirig bracket 102 is brought within range of the lever 16. The bracket 102 carries a stripper 111 so that, when operated by the lever 16, it strips the cop from the spindle into a tube 38. The winding-spindle comprises a split tube 1, Fig. 9, which is normally held in expanded position by a tapered member 116 but is collapsed to facilitate stripping by a lever 117 operated by an arm 120 carried by the bracket 102. A knife 15 is mounted in a slide on the bracket 102 and is advanced towards the spindle to sever the yarn by engagement with a cam 124. In horizontal-spindle machines, the cop may be formed on a tapered part 130, Fig. 10, and pushed by the forming cones on to a spindle 1 integral, separate or coupled to the tapered part against a buttress 12. The cones are operated to push the finished cop into a sleeve 132 clear of the tapered portion, the spindle 1 being retracted to the left and then advanced to the right to eject the cop, or the cop may be ejected by the new cop, or the sleeve may be in two parts which are opened to release the cop, or the spindle and the buttress frame may be swung into a downwardly inclined position, Figs. 13 and 14 (not shown). Specifications 513,395 and 513,396 are referred to.