Patent GB-1175367-A (GB)
Title: An Improved Automatic Yarn Winder.
IPC: B65H54/24
Filed: 1966-12-13
Abstract: 1,175,367. Automatic yarn winding apparatus with ballooning control device and supply. cop counter device. MURATA MACHINERY CO. Ltd. and TOYO BOSEKI K.K. 13 Dec., 1966 [17 Dec., 1965], No. 55849/66. Headings DIF and D1J. Each winding unit of an automatic winding machine which travels along a closed loop path during winding and requires a plurality of supply cops to form a fully packaged cone or cheese, includes a ballooning control means with actuating means for shifting the control means downwards to nearer the supply cop in dependance as the decreasing length of yarn on the supply cop and for causing return of the control means to its uppermost position on exhaustion of the supply cop. Each unit also includes a counter device 200 which counts the supply cops as they are supplied to peg 201, a detector which detects when the counter has counted a preselected number of supply cops and so indicates the necessity of doffing the fully packaged cone or cheese wound on a tube supported on shaft 9. The ballooning control means (Figure 5). The ballooning control means consists of an anti-sloughing tube 105, through which the yarn passes, mounted between the supply cop and a tensioning device 4. An anti-sloughing tube shifting mechanism is contained in a case 107 and consists of sprocket wheels 111, 114 and 115 mounted on shafts 110, 112 and 116 and interconnected by chains 117 and 113. A pinion 121 rotates as it engages the teeth of a rack 106 as the unit travels along the passage and causes shaft 116 to be driven and hence also shaft 110. Chain 113 is thus caused to turn counterclockwise and a slider 123 secured to the chain and supporting the tube 105 through a plate 124 causes continuous gradual downward movement of the tube 105 towards the supply cop. A pawl and second ratchet wheel on shaft 110 normally prevents return rotation of wheel 115, but allows for the necessary rotation for the return of the tube 105 to its initial uppermost position prior to unwinding of a fresh supply cop. Alternatively the mechanism can be such as to cause step by step downward shifting of tube 105 as the unit passes along the path. The counter device (Figure 11) The counter device consists of a ratchet wheel 205 marked at its circumference with numerals corresponding to the number of teeth and has an upstanding central pin 211 and a wheel pin 212 of equal height at a position adjacent a pre-selected numeral corresponding to the number of supply cops required for a fully packaged cone or cheese. A heart-shaped cam 204 is rigidly disposed under wheel 205 such that indicator 208 secured to bracket 202 initially faces numeral O. The counter device is carried with its winding unit along guide rail 213. Whenever a fresh supply cop is applied to peg 201 a solenoid (Fig. 18 not shown) is excited and causes a pawl device to turn ratchet wheel 205 by one tooth. A reset mechanism having an air cylinder is provided. The detector (Figure 14) The detector consists of a circular plate 221 having a central aperture and the same number of circumferential apertures 224 as there are teeth of wheel 205, numerals being marked adjacent the apertures 224. A counter plate 227 is mounted on plate 221 by screws and has a central aperture for a spring housing 231 and an offset aperture 235 for a further spring housing 230, the offset aperture being aligned with the aperture 224 corresponding to the preselected tooth of the counter ratchet-wheel. A pair of push pins 262 and 263 pushed downwardly by springs 264 and 265 are inserted in the housings and support nylon rollers 260 and 261 which engage with upstanding pins 211 and 212 of the counter device when the counter device arrives at a detecting mechanism. Only when the pointer of counter 200 indicates that the desired number of cops have been supplied will the wheel pin 212 have changed to a position in which it pushes pin 262 of the detector upwardly, the pin 211 always pushing pin 263 upwardly. A central level 248 is thereby pushed up and causes rotation of a limit switch lever 246 which switches on a signal lamp or causes actuation of an automatic doffing device.