GB1157177A - Regulator Mechanism, for a Winding Machine - Google Patents

Abstract

1,157,177. Spinning frames. BURLINGTON INDUSTRIES, Inc. 2 June, 1967, No. 25669/67. Heading D1D. As the ring rail 20 reciprocates it acts on a pressure control valve 56 which controls the air supply to a pneumatic cylinder 58, operating a variable speed belt drive 28, so that the speed of a spindle driving shaft 21 is varied in accordance with the position of the ring rail 20 as building proceeds. The mechanism provides for a speed variation during each traverse of the rail for an overall speed increase at each upward position of traverse. The rail 20 has attached to it a chain rack 118 that reciprocates with the rail and acts on a gear 124 operating the stationary control valve 56. The control valve 56 has a valve 84 which may be raised off its seating 82 to allow air to pass from a conduit 70 to a conduit 74 to increase the pressure on the cylinder 58 and also to act on a diaphragm 62 with a valve seating 94 cooperating with the valve 84, so that, as pressure builds up the seating 94 is moved against a spring 106 to release air to atmosphere and allow the valve 84 to abut its seating 82 and stop the supply of air to the cylinder 58. As the rack 118 moves upwardly during a traverse to wind closer to the centre of the spindle it rotates the gear 12 to move a rod 110 into the valve 56 to compress the spring 106 and to move seating 94 and thus the valve 84 off its seating 82 to increase the air supply to the cylinder 58 and thus the speed of the spindles. As the rail descends the gear 124 rotates the opposite way, withdraws the rod 110 from the valve 56 allowing the valve 84 to return to its seating, cutting off the supply of air to the cylinder 58 and thus reducing spindle speed as the yarn is wound further from the centre of the spindle. When the builder motion moves the rail to the next position of traverse an adjustably mounted peg 134 on the gear 124 rotates a bushing 102 to cause it to act on the spring 106 and move the valve 84 off its seating to provide for an overall increase of spindle speed. The variable belt drive has a nut 184 that fixes the maximum speed of the spindle and nuts 178, 180 that fix the minimum speed. A second embodiment (Figs. 7 and 9) is disclosed in which the minimum and maximum speeds are adjustable and controllable pneumatically. In this embodiment a manifold 210 supplies air to the control valve 56 and to manual control valves 226, 230, 242, and 248, the valves being connected to a control unit 222 by conduits 220, 224, 228, 240, and 246 respectively; the control unit 222 being connected to the cylinder 58 by a conduit 250. The control unit 222 (Fig. 9) has a double diaphragm 260 with a spring loaded valve 278 discharging to atmosphere between The diaphragms; the double diaphragm 260 being connected to an upper diaphragm 312 haying a pin 326. Above the pin 326 is a third diaphragm 314 with a pin acted on by a pivoted camming surface 342 which may be moved downwardly by longitudinal movement of a piston rod 348 in a cylinder 232. The cylinder 232 is pivoted on a lever 234 and its piston rod 348 is brought into contact with the camming surface 340 by a spring 362 (Fig. 7) Connected to a cylinder 244 whose piston rod 356 is attached to the piston rod of the cylinder 58. In use, to adjust the minimum spindle speed the valve 226 is operated to admit air through the conduit 224 onto the diaphragm 312 to depress the double diaphragm 260 against a spring 270. The valve 248 is adjusted to admit air to the conduit 246 which admits air to a chamber 282 having a ball valve 296 connected to the ball valve 278. As the rack rises and operates the control valve 56 air is admitted through conduit 220 to the double diaphragm 260 which rises against the preset minimum pressure of the diaphragm 312 and lifts ball valve 296 off its seating so that air from conduit 246 passes to conduit 250 to adjust cylinder 58 and increase spindle speed. As the rack falls the air from control valve 56 decreases, the double diaphragm falls, ball valve. 296 buts its seating cutting off supply to the cylinder 58 and reducing spindle 'speed and ball valve 278 leaves its seating allowing air to escape to atmosphere through the double diaphragm 260. To adjust the maximum speed the valve 230 is operated to admit air to the cylinder 232 whose piston rod 348 then acts on the cam 342 to depress the pin 332,' thus limiting the rise of pin 326 and hence double diaphragm 260. The pneumatic system may be made hydraulic by connecting return conduits to the atmospheric discharges.