SU151415A1 - Clamp of thread guiding lines - Google Patents

Description

There are known locks of thread-feeding lines of a cotton machine, slowing down the movement of thread-feeding lines when they approach the stops. For this purpose, pneumatic dampers and gear-type hump, slit-slot, chain and cam retarders are used.

Also known clamps to prevent rebounding of these rulers from the stop at the time of their impact. These latches operate on a mechanical principle and consist of kinematically coupled parts locking the thread guide bar when it hits the stop.

In the described retainer, in order to increase reliability in operation at an increased speed in the underdrive, the locking device is made up of an induction roller, a machine mounted on the carriage of the bearing stop and creating an electromagnetic force between the ruler and the fence through the chain of the parts holding and guiding them, and a device that switches on the power supply of the cutter to the moment of striking the ruler against the stop.

FIG. 1 shows a locking device; in fig. 2-electrical circuit of the switching device.

The locking device (Fig. 1) consists of an induction coil /, worn on the carriage 2 of the stop 3 of the machine. The induction coil creates an electromagnetic coupling force between the stop 3 by the ruler 4 through the holder 5, the guide 6 of the ruler and the guide 7 of the stop. Powering up the coil at the moment of striking the ruler against the stop is carried out by a device which consists of a spring-loaded cage 8 mounted on each stop and carrying normally closed contacts 9, a pusher 10 fixed at each end of the thread-liner and interacting with the cage and electrical equipment ( Fig. 2).

No. 151415-2 From the transformer TR, two rectifiers are fed, of which one is made on two triodes L-1 and L2 and is connected to the power supply circuit of the induction coil K, and the other B - on semiconductor diodes and connected via I / C- and RC-2 clips to the control grids of the triodes for supplying the locking negative voltage removed when the ruler strikes the abutment to turn on the power supply of the coil. . The operation of the switching device is carried out as follows.

Normally closed contacts (PK-1 and PK-2) break the control circuit at the moment of applying a pulse to the induction roller 1 (K) and close it. when the pulse needs to be removed. Upon impact of the holder 8 by the pusher W, the contacts are broken. In the case of mercury contacts, the pulse duration is provided by the angle and inclination of the mercury contact cylinder, and the pulse advance is the length of the sleeve, which depends on the installation position of the pusher on the ruler.

Subject invention

Claims (2)

1. Fixer of the thread-guiding lines of the cotton machine, made in the form of a device that locks the thread-guide ruler at the moment of its impact on the limiting stop, characterized in that, in order to increase the reliability of operation at an increased speed in the lower, the locking device consists of an induction coil worn on the carriage an emphasis of the maschine and an electromagnetic coupling force between the ruler and the anvil through the chain of the masking and retaining parts of the mashina, and a device that includes a coil at the time of the impact of the ruler against R. 2. The latching device according to claim 1, characterized in that the switching device consists of a spring-loaded cage mounted on each stop, carrying normally closed contacts, a pusher mounted on each end of a threading line that interacts with the cage, and two rectifiers fed by a common transformer, which one is made on two triodes and is connected to the power supply circuit of the induction coil, and the other on semiconductor diodes and is connected via contacts of the holder to the control grids of the triodes for supplying the locking negatively the voltage taken when the ruler strikes the abutment to turn on the power of the roller. 7 3 ff ten  I ft / four V r r niiz-i (- -