SU506653A1 - Device for stopping the roving in the spinning machine when yarn trimming - Google Patents

Description

ten The mechanical probes of the yarn break sensor 3 (4) monitor the yarn. In the event of a yarn break, through the corresponding nozzle 5 (6) or 7 (8), an electromagnetic pneumatic valve 9 (10) or I (12) is supplied with an air jet to the wedging mechanism 13. At the same time, the air hits the paddle 14 and overturns the jamming crush 15. Power roving exhaust device is stopped.

The solenoid valves are controlled via coincidence circuits 16, 17, 18, 19, whose inputs are signals from the carriage position sensor 20, synchronizer 21 of the yarn break sensor relative to the spindle and yarn break 3 sensor (4).

From one of the outputs of the carriage position sensor 20, permission is received for that pair of matching circuits (16, 17 or 18, 19) through which the valves are turned on, supplying power to the nozzles that are lagging behind the yaw break sensors in the direction of travel. When the carriage changes direction, the signals from sensor 20 to the matching circuits 16, 17, 18, 19 are respectively injected. Synchronizer 21 outputs a voltage pulse to the inputs of the matching circuits 16, 17, 18, 19 when the sensor passes the middle of the inter-spaced space. At this moment, the working nozzle (nozzle lagging behind the sensor in the direction of the carriage) is opposite the blade 14 of the jamming crush 15 of the corresponding controlled spindle. If a yarn is present on the controlled spindle, the latter leads the probe out of the equilibrium position and the corresponding coincidence circuit is prohibited from the yarn breakage sensor. Thus, the voltage pulse from the synchronizer of the position of the break sensor relative to the spindle does not pass to the solenoid valve.

In the event of a yarn breakage on the control spindle, the probe in the direction of passage of the controlled spindle by the working nozzle leaves the

zapyleni with the previous thread and renders with - in neutral position. In this case, the coincidence circuits 16, 17 (18, 19) are open at the input from the breakage yarn 3 (4) sensor, and with a pulse

the synchronizer of the position of the yarn break sensor relative to the spindle 21 turns on the electromagnetic pneumatic valve 9, 10, 11, 12. The air through the nozzle hits the paddle 14, the rusk 15 turns, the roving is wedged and the feed pair of the exhaust device breaks it.

After the elimination of the cliff, return the biscuit B to its original position. Air is supplied to the Valves by means of a pneumatic cable 22, assembled from individual pneumatic tubes, which provides the necessary flexibility to the pneumatic cable, and a receiver 24, which allows a significant reduction in the flow cross section of the pneumatic cable.

Claims (1)

Invention Formula A device for stopping the feeding of a roving in a spinning machine in the event of a yarn break, containing a yarn break sensor mounted on the carriage, a synchronizer of the yarn break sensor relative to the spindle, a drive of the yarn break sensor, a control circuit, a roping power supply unit with an actuator, made in the form of pneumatic valves with nozzles, and a pneumatic feeding system, characterized in that, in order to increase the reliability of the device, it is equipped with a position sensor a carriage, an additional actuator and a receiver, wherein the actuators through the receiver and control circuit are connected to the carriage position sensor, yarn break sensor and synchronizer of the yarn break sensor relative to the spindle, and the pneumatic valve nozzles are installed relative to the break yarn sensor at a distance equal to half of the interlaced step. Rig 1 Food intake t fteeuSepy