Patent GB-1439429-A (GB)
Title: Automatic cable winding apparatus
IPC: B65H54/28
Filed: 1974-08-28
Abstract: 1439429 Winding side-by-side turns SUMITOMO ELECTRIC INDUSTRIES Ltd 28 Aug 1974 37679/74 Heading D1J The invention is concerned with apparatus for winding cable in side-by-side turns on a flanged drum such that when the last turn a Fig. 9, of the first layer has been wound, the first turn b of the next layer is wound on top of turn a, the next turn c is wound on top of turn b, and pressing means that is used to press the cables into compact side-by-side relation then moves away from flange A to allow turn c to fall into postion b' whereafter the pressing means moves temporarily back towards flange A to press turn b' against turn b. Thereafter the pressing means moves towards flange B in a manner ensuring that the turns being laid on a second layer are in compact side-by-side relationship. According to the invention the apparatus comprises:- (a) A traverse block 4a, Fig. 2, carrying an arm 5 on which are guide rollers 7 above and below the cable 3 for engagement with the cable; the traverse block 4a being slidably mounted on a traverse base 4; (b) A presser roller 6 on the arm 5 for pressing the cable sideways; (c) Proximity switches 26, Fig. 4, for detecting when the cable 3 is wound up to the vicinity of a flange 15 of the drwm; (d) Means 13 for stopping the traverse base 4 when a proximity switch 26 is actuated by a drum flange; (e) Means 20 for then measuring the further rotation of the take-up drum and when a sufficient angle of rotation has been completed to wind turns b and c further means 21 actuated by the means 20 for retracting the arm 5 from the flange 15 to allow turn c to fall into postion b' and then temporarily advance arm 5 towards the flange again to compact turn b' against turn b; (f) Means 24 thereafter traversing the base 4 to cause the next layer of conductor to be wound; and (g) A device for raising the traverse arm 5 by an amount substantially equal to the diameter of the cable at the end of each traverse. Presser Roller 6 In Fig. 2 the presser roller 6 is biassed to the left by air supplied to a cylinder 9, the arm 5 being pivotable about a fulcrum support carried by the traverse block 4a. When the traverse base 4 moves close to the right hand flange 15 it is detected by a limit switch 26 and this causes the pressure to an air cylinder 9 to stop and an air cylinder 14 to be actuated in a manner revolving the arm 5 by 180 around the cable 3 and so position the roller 6 on the other side of the cable 3. Air is then applied to the cylinder 9 again but this time in a manner biassing the roller 6 to the right. Proximity switches 17 When a proximity switch 17 detects that the cable 3 has reached a flange 15, it stops the traverse base 4, raises the proximity switch 17 by means of a motor 18 by an amount equal to the diameter of a cable 3, and energizes an electromagnetic clutch 19 to couple a rotation angle detector 20 with the drum rotation shaft 16. Rotation Angle Detector 20 When the detector 20 has been energised by a proximity switch 17 it signals when the flanged drum has rotated through a predetermined angle, for example #-# revolution, and then disconnects itself via electromagnetic clutch 19; at the same time reversing the direction of rotation of the motor 24 thus causing the traverse base 4 to move in the direction of the dotted arrow. Traverse Base 4 The traverse base 4, when the first layer has been wound in Fig. 2, temporarily moves in the direction of the dotted arrow rapidly and, thereafter, return to its initial position, that is, to the centre position of the air cylinder. This movement permits turn c to move into position b' as described above. Movement of the traverse base 4 is controlled by an air cylinder operated by timers depending upon the speed of the flanged drum. Proximity Switch 26 The proximity switch 26 may be inside the centre of a guide roller 7. Alternatively two proximity switches 17a, 17b Figs. 6 and 7 (not shown) may be mounted on the arm 5, one for engagement with the left flange and the other for engagement with the right flange. Deviation Angle Detector Any movement of the arm 5 from its normal setting causes the traverse base 4 to speed up or slow down to bring the arm 5 back to its normal setting. This allows the traverse mechanism to accommodate any changes in the diameter of the cable. The Specification describes circuits whereby the traverse block 4a can make it to-and-fro movement at the end of each traverse of the traverse base 4. The Specification also describes means whereby allowance is made for the traverse base 4 to be advanced or delayed in a manner compensating for the fact that cables tend to either run on or separate from the preceding cable turn according to their direction of twist.