Device to koetzerspulmaschinen with selbsttaetigen, mutually independent haen of the winding stations for the feeding of the winding stations with empty sleeves

摘要

463,148. Winding yarns &c. REINERS, W. Feb. 21, 1936, No. 5321. Convention date, March 4, 1935. [Class 120 (ii)] In winding cops of yarn or thread, a group of spindles are driven in unison with simultaneous starting and doffing of finished cops but with independent means for building the cops and independently controlled traverse movements, stoppage of any spindle being automatically and independently effected in case the yarn thereof breaks or fails or on completion of the winding ; cops which are not completely wound may be doffed with the completed cops and returned to the machine by hand for completion at the next winding operation or the incompletely wound cops may be left in position in which case it is arranged that the doffing mechanism is disconnected from the spindle mechanism during the winding and the units thereof only come into operation when the respective cops are fully wound. As shown in Figs. 1 and 2 each spindle 4 is driven from a common shaft 1 through bevel gears 2, 3 and a friction clutch 7, 8 normally held in the driving position by a spring 9 but disengaged to stop the spindle when the yarn breaks or fails by the pivoted lever 10, 11, 12 which is moved by its spring 13 when the arm 12 is released from the pivoted lever 15, 16 by movement of the arm 15 thereof by the nose 19 of the pivoted yarn detector 18. The spindle 4 is slidable in its bearings 5, 6 and carries a rack 24 slidable in bearings 25, 26 and engaging a pinion 27 loose on the common shaft 28 between collars 29, 30 fixed thereon and carrying a ring 32 to the periphery of which is connected a chain 33 ; the chain carries a weight 35 which tends to rotate the pinion and force the cop on the spindle into the conical cup 46 carried by a common shaft 45 and held stationary during winding by arms 47, 48 engaging a rail 49. The yarn is laid on the tubes 81 on the spindles by oscillating thread guides 52 each of which is resiliently connected to the common rocking shaft 50 so that in the event of a failure or breakage of a yarn, the thread guide thereof may be held by its handle 63 or by a pivoted latch 65 against movement while the yarn is being pieced up. The spindles are simultaneously started by moving a hand lever 76 on the end of a shaft 74 carrying cams 75 which move the levers 10, 11, 12 so that they are engaged by the levers 15, 16 and the clutches 7, 8 are then engaged by their springs 9. When a cop attains a predetermined length, an adjustable striker 43 on a bar 42 mounted on the rack 24 engages the arm 16 of the lever 15, 16 and releases the lever 10, 11, 12 to disengage the clutch 7, 8 and stop the corresponding spindle 4 ; a hand wheel 40 on the shaft 28 is then rotated so that projection 31 on the collars 30 engage projections 36 on the rings 32 on the pinions 27 and cause the racks 24 to withdraw the cops from the cups 46 and the shaft 50 is moved by its hand lever 73 so that all the thread guides are moved towards the spindle bosses 66. The shaft 45 with the cups 46 are then moved laterally, the shaft 28 is rotated so as to move the spindles outwards, the spindles are clutched to the shaft 1 by actuating the lever 76 and given a few rotations by the hand wheel 79 so that the end of the yarn 20 is laid in an open helix on the outside of each cop and the thread guides come opposite the grooves 67 in the spindle bosses 66 where a few starting turns 80 are laid, the yarn from the cops passing across grooves 69 in the bosses 66 and being severed by knives 71 carried by the shaft 45 while brackets 70 carrying the knives 71 engage the grooves 69 and doff the cops as the spindles are retracted by turning the hand wheel 40 ; the doffed cops drop on to a travelling band or into a container. The shaft 45 is now moved until troughs 78 thereon carrying empty cop tubes are in line with the spindles and the spindles are advanced to engage the tubes and then retracted ; the shaft 45 is then moved to bring the cups 46 in line with the spindles and tubes which are then pushed into the cups and the yarn guides are moved to their normal position for restarting of the spindles when the yarn detectors 18 are moved by the tensioned yarns, the shaft 1 being restarted and the lever 76 being moved to its normal position. In another arrangement for winding on to short tubes 81a, Fig. 11, or on to the bare spindles, the spindle has only a slight longitudinal movement for the purpose of disengaging the cop from the cones 46 in the event of any irregularity occurring in the winding and is held in the normal winding position by a latch 85 and the cop is built by pushing it along the spindle by contact with the cone 46 as the winding proceeds ; the thread guides are mounted on a rock-shaft 50 and are resiliently connected to rods 92 reciprocated by cams 89 driven from the spindles 4. When a cop is of the predetermined length it contacts with a feeler 112 connectedly a rod 114 with the clutch lever 15, 16 so that the clutch is disengaged and the spindle stopped. The thread guides are then swung, by rocking arms 101 on the shaft 50, over the grooves 67 of the spindle bosses, the clutches are engaged, the spindles given a few turns to wind some yarn in the grooves 67, cutters 124 on a shaft 125 are swung up to sever the yarns, the feelers 112 are swung up out of the way of the cops by movement of the lever 119 and the racks 24a carrying the cones 46 are moved so that all the cops are pushed off the spindle and doffed ; the cones 46 are then returned to their normal position. If the cops are being wound on tubes these are carried in troughs 78 on a shaft 45 movable laterally in brackets 49b carried by racks 24b, the shaft being first moved to bring the troughs in line with the spindles and the racks being then moved to carry the tubes on to the spindles and into the cones 46. In the arrangement shown in Fig. 18, the cop tubes are supported between stub spindles 6 and counter heads 126 slidable in bearings 137 and the building of each cop is effected by a feeler wheel 127 engaging the yarn windings and carried by a screwed spindle 128 ; the wheel 127 is embraced by a yoke 145 carrying the yarn guide 52 and the spindles 128 are mounted by levers 129, 130 on a rock-shaft 50, and a stationary shaft 131 respectively, the levers 129 being resiliently connected to the shaft 50 for oscillating the guides, and the levers 130 being free to rock on the shaft 131. Each spindle clutch is actuated by a lever 10, 11 loose on a shaft 74 and held so that the clutch is engaged by a notch 135, in a rod 133 connected to the lever 11, engaging a bracket 134 ; the notch is disengaged from the bracket to allow a spring 13 to cause disengagement of the clutch by lifting the rod manually, or by a pin 18b on the yarn detector lever 18 when the yarn breaks or fails and by a pin 52a on the yarn guide yoke 145 when a cop is of the predetermined length. The counterheads 126 are spring-controlled in the bearings 137 and are notched at their rear ends 138 and, when the cops are of the predetermined length, rods 144 are moved by the yarn guide yokes 145 to actuate latches 146 which engage the ends 138 of the counter heads ; the completed cops are then doffed by sliding bars 148 carrying brackets 140 in which the latches 146 are mounted, the uncompleted cops remaining held by their counterheads 126. The yarn guides are moved opposite the grooves 67 in the spindle bosses of the completed cops by actuating racks 157 having notches 160 in which latches pivoted in the yarn guide bracket are moved on completion of the cops and lowering of the spindles 128 ; this movement of the spindles also causes the latches to actuate spring arms and force the feeler wheels out of engagement with the threads on the spindles, the wheels re-engaging the threads when they arrive opposite the grooves 67. After winding a few turns of yarn in the grooves by rotating the spindles 4, the yarns are severed by cutters 124 on the shaft 74 which is actuated when the handle 76 is moved to disengage the spindle clutches. The fresh cop tubes are held in troughs carried by arms 78a pivoted in brackets 172a and held upright by springs 172 ; the brackets are mounted on bars 170a which are actuated to move the tubes into alignment with the stub spindles and counter heads and if an arm 78a encounters an uncompleted cop it is tilted away therefrom so that its tube does not reach the donning position. Any troughs 78a may be held out of the way of an uncompleted cop by means of a manuallyactuated latch. The troughs may be arranged on endless conveyers and the tubes fed thereto from the end of the machine. Specifications 26265/97, [Class 120], and 416,260 are referred to.