GB526628A - Improvements in or relating to cheese-winding apparatus - Google Patents

Abstract

526,628. Winding threads. KINSELLA. E., and PRITCHARD. R. G. March 23. 1939. No. 9166. [Class 120 (ii)] In a machine for winding threads, particularly of artificial silk continuously with their production, the spindles project from opposite sides of a trunnion casing with their axes lying in opposite sides of the axis of the casing, means are provided to rotate the casing about its axis to position one of the winding spindles alongside a traverse guide after removing the other spindle from the guide which is movable away from the spindle as the thread package increases in size, and guides are fixed to the casing each near one of the spindles and spaced therefrom by an amount slightly in excess of the full diameter of the package so that the field of traverse of the thread remains within the length of the package until the rotation of the casing causes the thread to be engaged by one of the fixed guides and to be guided thereby to the surface of the package during the remainder of the rotation of the casing. As shown, the spindles 3, Figs. 6 and 8, are driven by gearing in the trunnion casings from shafts 7 which project from the casing into a box and are there geared to a pair of chain wheels 48, 51 driven from gear boxes 53, 54, the gearing in one of the boxes being at rest while the other is driving the shaft 7 geared to the spindle in the winding position. Each traverse guide 12 is carried by a rod 24 in a frame 35 oscillatably mounted on the axis of the cam 26 reciprocating the rod so that the thread guide moves away from the winding spindle as the package grows against the action of an adjustable weight 38. The casing 1 is locked in position during winding by a spring plunger 45 and carries a worm wheel 41 gearing with a worm on a shaft 44 carrying a hand wheel 43 and when a package is complete the plunger 45 is released and the casing is rotated by the wheel 43 through half a revolution to take the spindle carrying the completed package to the doffing position and move the empty spindle into the winding spindle, the plunger 45 then automatically snapping into position to lock the casing in position. The casing also carries a chain wheel 13 geared to a chain wheel 1301 carrying a grooved cam 135 engaging a pin 133 projecting from a rod 40 passing through lugs 39 on the traverse frames 35 and carrying collars 136 engaging the lugs, the cam rotating through a full revolution while the casing is rotated half a revolution and moving the rod 40 to withdraw all the guides 12 away from the wound packages until the packages have moved below the guides 12 when the cam causes the return of the guides to the position near the spindles, the thread 9 being carried by the guide into engagement with a fixed guide 13 between hooks thereon and as the full spindle reaches the doffing position the thread becomes engaged in notches 22 at the shoulder of the empty spindle and is broken between the two spindles. The gear boxes 53, 54 are geared by sprockets and chains to a shaft 65 and are put into operation by hand levers 71 through clutches on the shaft 65 which is driven from a sprocket 66 and carries sprockets 122 geared to sprockets 123, 124, Fig. 18, of slightly different size driving the traverse cam shafts. The sprocket 124 is rotatable on the shaft 29 and carries a cam 126 lying within a member 125 fixed to the shaft and rotatably carrying the sprocket 123 ; the cam engages a follower on a pair of levers 128 connected at one end 130 to the member 125 and at the other end 129 to the sprocket 123 so that as the sprocket 123 is rotated the shaft 29 is driven by the levers 128 and member 125 but as the cam 126 is driven by the sprocket 124 at a slightly different rate, it moves the levers to increase and decrease by a small amount the drag on the member 128 and so the speed of the shaft 29, thus breaking up any tendency for the formation of ribbon winding. The waste roller shaft of the spinning apparatus is driven from a sprocket 72 on the shaft 65 and through sprocket and spur gearing drives the pumps of the apparatus and a cam 88 which actuates through levers and a pawl a ratchet wheel 89 the shaft of which carries an eccentric with a pawl driving a ratchet wheel on a shaft 98, and geared to the shaft through an epicyclic train so that the shaft 98 rotates slowly and a cam 105 carried thereby makes half a revolution while a complete package is being wound. The cam 105, Fig. 3, has a semi-circular part 106 and a part 107 giving a steady lift ending in a sudden drop 108 and the cam engages projections 209, 210 on a pair of pivoted levers 109, 110 each connected at its free end with a chain 112. The chains are connected to wedges 114 mounted in slides 115 alongside the gear boxes 53, 54 and the wedges have slots engaging the control spindles 117 of the gear boxes and are dispersed between heads 118 and heads 119 on control sleeves 120 on the spindles. As the cam part 107 engages the lever 109 the chain 112 connected thereto is pulled up and the heads 118, 119 of the corresponding gear box are separated by the wedge and the expansible pulleys in the gear box are actuated to give the winding spindle the gradually reduced speed to give constant linear winding speed ; when the cam drop meets the projection on the lever 109, the wedge is pulled down by a spring 121 and the control spindle of the other gear box is put into operation by the cam part 107 engaging the projection on the lever 110, the clutch driving the box having been put into engagement by actuating its lever 71 just before the casing 1 is rotated so that at the time the empty spindle reaches the winding position it is moving at its correct speed. After the trunnion casing has been rotated the other clutch lever 71 is actuated to stop the spindle carrying the completed package.