SU1002422A2 - Device for tying-in yarn in ring-spinning machine - Google Patents

Description

(54) DEVICE FOR YARNING THE YARN ON THE RING TIRE MACHINE

The invention relates to the textile industry and can be used in spinning production on ring spinning and the like. From the main auth. 947236 discloses a device for picking yarn on an annular spinning machine, comprising means for gripping and returning a yarn end to an exhaust pair of a stretching device, positioned between the exhaust pair and the machine thread guide and connected to the breakage sensor, and connecting the ends of the yarn and sliver, connected to the source of air dilution and communicating with the tube for guiding the yarn fixedly mounted between the outlet pair and the means for grabbing and returning the end of the yarn which contains a push All, mounted in contact with the cylinder. In this case, the pressure roller is connected with the breakage sensor by means of an actuator to move it through the time relay ij ... When the yarn is broken, the sensor commands the actuator that drives the pressure roller to interact with the drive cylinder, and the relay the time controlling the actuator, with this end of the yarn, is fed through the tube to the nozzle. The time during which the end of the yarn is supplied to the nozzle is determined by the time delay and is set taking into account the fact that a piece of yarn of a certain length must enter the nozzle before the actuator turns off. Such a technical solution for switching off the actuator does not allow for the constancy of the length of the yarn segment; The free end of the yarn in the guide tube at the time of gripping has a different length, which negatively affects the reliability of the device. The aim of the invention is to increase the work by ensuring the constancy of the length of the yarn earning end. This target is in a device for picking yarn on an annular spinning machine, comprising means for gripping and returning the end of the yarn to the exhaust pair of an extractor, placed between the exhaust pair and the machine thread guide and

With a yarn breakage sensor, and a connector for connecting yarn ends and a sliver, connected to a vacuum source and communicating with a tube for guiding the yarn fixedly mounted between the output pair and the yarn end returning means that contains the drive cylinder and A pressure roller, which is mounted with the possibility of contact with the cylinder and is connected to the yarn break sensor by means of an actuator, is achieved by the fact that a V-shaped recess for the tail is made on the inner surface of the tube a sensor at the breakage of the yarn, and the latter is directly bonded to the actuator.

In this case, the sensor is made spring-loaded.

FIG. 1 shows a device in section / in FIG. 2 - part of the tube with the nozzle at the moment of switching off the actuator.

The device comprises a tube 1 for guiding the yarn 2, interposed between an exhaust pair 3 of a machine and a means for gripping and returning the end of the yarn to an outlet pair having a driving cylinder 4 and a pressure roller 5. A pressure roller 5 mounted above driven cylinder 4, has the ability to move under the action of the actuator b, directly connected to the sensor 7, placed inside the tube 1. The tube 1 has a nozzle 8 for connecting the yarn ends and the sliver 9 connected to the air dilution source ( The drawings are not shown) and made communicating with the tube. On the inner surface of the tube there is a V-shaped recess 10 for inserting the sensor 7, which is spring-loaded.

The drive cylinder 4 with a roller 5 is placed between the thread guide (not shown) of the machine and tube 1.

During the operation of the machine, the sliver 9 coming out of the outlet pair 3 is twisted into yarn 2, freely passing through the tube 1 in the gap between the cylinder 4 and the pressure roller 5.

When the yarn breaks, the tension in it decreases and the sensor 7 moves into the notch 10, leaving a gap of 3-4 mm between the bottom of the notch and the lower end of the sensor, and the actuator 6 is turned on, which presses the roller 5 to the cylinder 4, creating a clip. As a result of the rotation of the cylinder 4, the end of the yarn is fed through a tube to the nozzle 8, where it is connected to the end of the sliver.

When the end of the yarn enters the socket connected to the air resolution source, the tension of the yarn increases, which leads to the spreading of the curved section of the yarn located in the notch Y. Straightening, the yarn overcomes the spring force and pushes the sensor out of the notch , while the actuator is turned off and the roller 5 moves away from the cylinder 4. The torque coming from the torsion element (not shown) shows the joint finally fixing the connection in the pipe 8 of the yarn ends and the sliver.

In the event of a yarn break outside the tube 1, the end of the yarn on the cob is retrieved by a conventional handler and sent to the clamp cylinder 4 and roller 5.

Further, the process of tampering occurs in the same sequence.

The invention allows the actuator to be switched off only when a length of yarn of a certain length enters the nozzle, which ensures the reliability of yarn cropping. The length of this segment can be adjusted by varying the force of the spring acting on the sensor. In addition, such a constructive solution makes it possible to refuse the time relay and thereby simplify the design of the device.

Claims (2)

1. A device for picking yarn on a ring spinning machine according to auth.St. 947236, characterized in that, in order to increase the reliability of operation by ensuring the constancy of the length of the yarn earning end, a V-shaped notch is made on the inner surface of the tube for the sensor to come in when the yarn is broken, and the latter is directly connected to the actuator.  2. A device according to claim 1, characterized in that the sensor is spring-loaded. Sources of information taken into account in the expert world 1. USSR author's certificate Jt 947236, kl.O 01 H 15/00, 1977..